Find Similar

one piece thermal underwear royal blue

Name: One Piece Thermal Underwear Royal Blue
Brand: Deux par Deux
SKU: fa937194-2ca5-4814-8530-cf93d9ca8631
Price: 59.0 USD
Availability: InStock

$59.00 Regular price 0% off

Get 59 Simon+^® Points with this purchase.

Learn More

Preloved Condition Guide

Like New

Preserved in like-new condition. Item may have been used as a
display product and has no noticeable marks or wear to hardware.

Pristine

Preserved in almost-new condition. Item has few or no
noticeable marks or wear to hardware.

Very Good

Item may have some hardly noticeable marks or wear to hardware.

Good

Item may have some noticeable marks or wear to hardware.

Fair

Item may have multiple, noticeable marks or wear to hardware.

Authenticity Ensured

Merchandise is shipped and sold by the brand or store directly or from trusted independent sellers. In all cases, we stand by the authenticity of every product sold on our site and app.

Size (Child) Size Guide

US 12

US 7

US 14

US 6

US 10

US 3T

US 8

US 2T

US 4T

US 5T

Color — royal blue

royal blue

Ship Unlimited Items for Only $4.95

Usually ships within 1-2 business days

Only 4 left in stock!

[{"id":45552008331324,"title":"US 12 \/ royal blue","option1":"US 12","option2":"royal blue","option3":null,"sku":"fa937194-2ca5-4814-8530-cf93d9ca8631","requires_shipping":true,"taxable":true,"featured_image":{"id":48033578418236,"product_id":8947296239676,"position":1,"created_at":"2026-06-16T11:10:51-04:00","updated_at":"2026-06-16T11:10:52-04:00","alt":null,"width":1125,"height":1688,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652","variant_ids":[45552008331324,45552008364092,45552008396860,45552008429628,45552008462396,45552008495164,45552008527932,45552008560700,45552008593468,45552008626236]},"available":true,"name":"One Piece Thermal Underwear Royal Blue - US 12 \/ royal blue","public_title":"US 12 \/ royal blue","options":["US 12","royal blue"],"price":5900,"weight":363,"compare_at_price":5900,"inventory_management":"shopify","barcode":"661826893575","featured_media":{"alt":null,"id":37954944270396,"position":1,"preview_image":{"aspect_ratio":0.666,"height":1688,"width":1125,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":45552008364092,"title":"US 7 \/ royal blue","option1":"US 7","option2":"royal blue","option3":null,"sku":"f7de0fd1-1297-4abf-bf9f-18ef5acac0e2","requires_shipping":true,"taxable":true,"featured_image":{"id":48033578418236,"product_id":8947296239676,"position":1,"created_at":"2026-06-16T11:10:51-04:00","updated_at":"2026-06-16T11:10:52-04:00","alt":null,"width":1125,"height":1688,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652","variant_ids":[45552008331324,45552008364092,45552008396860,45552008429628,45552008462396,45552008495164,45552008527932,45552008560700,45552008593468,45552008626236]},"available":true,"name":"One Piece Thermal Underwear Royal Blue - US 7 \/ royal blue","public_title":"US 7 \/ royal blue","options":["US 7","royal blue"],"price":5900,"weight":363,"compare_at_price":5900,"inventory_management":"shopify","barcode":"661826893544","featured_media":{"alt":null,"id":37954944270396,"position":1,"preview_image":{"aspect_ratio":0.666,"height":1688,"width":1125,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":45552008396860,"title":"US 14 \/ royal blue","option1":"US 14","option2":"royal blue","option3":null,"sku":"74f6239e-6ea4-4eb3-b0bc-6c719814992c","requires_shipping":true,"taxable":true,"featured_image":{"id":48033578418236,"product_id":8947296239676,"position":1,"created_at":"2026-06-16T11:10:51-04:00","updated_at":"2026-06-16T11:10:52-04:00","alt":null,"width":1125,"height":1688,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652","variant_ids":[45552008331324,45552008364092,45552008396860,45552008429628,45552008462396,45552008495164,45552008527932,45552008560700,45552008593468,45552008626236]},"available":true,"name":"One Piece Thermal Underwear Royal Blue - US 14 \/ royal blue","public_title":"US 14 \/ royal blue","options":["US 14","royal blue"],"price":5900,"weight":363,"compare_at_price":5900,"inventory_management":"shopify","barcode":"661826893582","featured_media":{"alt":null,"id":37954944270396,"position":1,"preview_image":{"aspect_ratio":0.666,"height":1688,"width":1125,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":45552008429628,"title":"US 6 \/ royal blue","option1":"US 6","option2":"royal blue","option3":null,"sku":"c7f04e9a-94fd-4909-b722-e3314d0c58b6","requires_shipping":true,"taxable":true,"featured_image":{"id":48033578418236,"product_id":8947296239676,"position":1,"created_at":"2026-06-16T11:10:51-04:00","updated_at":"2026-06-16T11:10:52-04:00","alt":null,"width":1125,"height":1688,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652","variant_ids":[45552008331324,45552008364092,45552008396860,45552008429628,45552008462396,45552008495164,45552008527932,45552008560700,45552008593468,45552008626236]},"available":true,"name":"One Piece Thermal Underwear Royal Blue - US 6 \/ royal blue","public_title":"US 6 \/ royal blue","options":["US 6","royal blue"],"price":5900,"weight":363,"compare_at_price":5900,"inventory_management":"shopify","barcode":"661826893537","featured_media":{"alt":null,"id":37954944270396,"position":1,"preview_image":{"aspect_ratio":0.666,"height":1688,"width":1125,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":45552008462396,"title":"US 10 \/ royal blue","option1":"US 10","option2":"royal blue","option3":null,"sku":"06df6d46-a0e0-4ba4-8da0-a10778261191","requires_shipping":true,"taxable":true,"featured_image":{"id":48033578418236,"product_id":8947296239676,"position":1,"created_at":"2026-06-16T11:10:51-04:00","updated_at":"2026-06-16T11:10:52-04:00","alt":null,"width":1125,"height":1688,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652","variant_ids":[45552008331324,45552008364092,45552008396860,45552008429628,45552008462396,45552008495164,45552008527932,45552008560700,45552008593468,45552008626236]},"available":true,"name":"One Piece Thermal Underwear Royal Blue - US 10 \/ royal blue","public_title":"US 10 \/ royal blue","options":["US 10","royal blue"],"price":5900,"weight":363,"compare_at_price":5900,"inventory_management":"shopify","barcode":"661826893568","featured_media":{"alt":null,"id":37954944270396,"position":1,"preview_image":{"aspect_ratio":0.666,"height":1688,"width":1125,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":45552008495164,"title":"US 3T \/ royal blue","option1":"US 3T","option2":"royal blue","option3":null,"sku":"179c0fdf-dda9-4fcd-97a4-d43b0e44c266","requires_shipping":true,"taxable":true,"featured_image":{"id":48033578418236,"product_id":8947296239676,"position":1,"created_at":"2026-06-16T11:10:51-04:00","updated_at":"2026-06-16T11:10:52-04:00","alt":null,"width":1125,"height":1688,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652","variant_ids":[45552008331324,45552008364092,45552008396860,45552008429628,45552008462396,45552008495164,45552008527932,45552008560700,45552008593468,45552008626236]},"available":true,"name":"One Piece Thermal Underwear Royal Blue - US 3T \/ royal blue","public_title":"US 3T \/ royal blue","options":["US 3T","royal blue"],"price":5900,"weight":363,"compare_at_price":5900,"inventory_management":"shopify","barcode":"661826893506","featured_media":{"alt":null,"id":37954944270396,"position":1,"preview_image":{"aspect_ratio":0.666,"height":1688,"width":1125,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":45552008527932,"title":"US 8 \/ royal blue","option1":"US 8","option2":"royal blue","option3":null,"sku":"a6124562-3633-42bc-8457-128c6c94225c","requires_shipping":true,"taxable":true,"featured_image":{"id":48033578418236,"product_id":8947296239676,"position":1,"created_at":"2026-06-16T11:10:51-04:00","updated_at":"2026-06-16T11:10:52-04:00","alt":null,"width":1125,"height":1688,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652","variant_ids":[45552008331324,45552008364092,45552008396860,45552008429628,45552008462396,45552008495164,45552008527932,45552008560700,45552008593468,45552008626236]},"available":true,"name":"One Piece Thermal Underwear Royal Blue - US 8 \/ royal blue","public_title":"US 8 \/ royal blue","options":["US 8","royal blue"],"price":5900,"weight":363,"compare_at_price":5900,"inventory_management":"shopify","barcode":"661826893551","featured_media":{"alt":null,"id":37954944270396,"position":1,"preview_image":{"aspect_ratio":0.666,"height":1688,"width":1125,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":45552008560700,"title":"US 2T \/ royal blue","option1":"US 2T","option2":"royal blue","option3":null,"sku":"a53cf2be-308a-432b-9c84-7227a3678cb7","requires_shipping":true,"taxable":true,"featured_image":{"id":48033578418236,"product_id":8947296239676,"position":1,"created_at":"2026-06-16T11:10:51-04:00","updated_at":"2026-06-16T11:10:52-04:00","alt":null,"width":1125,"height":1688,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652","variant_ids":[45552008331324,45552008364092,45552008396860,45552008429628,45552008462396,45552008495164,45552008527932,45552008560700,45552008593468,45552008626236]},"available":true,"name":"One Piece Thermal Underwear Royal Blue - US 2T \/ royal blue","public_title":"US 2T \/ royal blue","options":["US 2T","royal blue"],"price":5900,"weight":363,"compare_at_price":5900,"inventory_management":"shopify","barcode":"661826893490","featured_media":{"alt":null,"id":37954944270396,"position":1,"preview_image":{"aspect_ratio":0.666,"height":1688,"width":1125,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":45552008593468,"title":"US 4T \/ royal blue","option1":"US 4T","option2":"royal blue","option3":null,"sku":"fe8791d3-5ce2-4a68-a865-848b2adb133f","requires_shipping":true,"taxable":true,"featured_image":{"id":48033578418236,"product_id":8947296239676,"position":1,"created_at":"2026-06-16T11:10:51-04:00","updated_at":"2026-06-16T11:10:52-04:00","alt":null,"width":1125,"height":1688,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652","variant_ids":[45552008331324,45552008364092,45552008396860,45552008429628,45552008462396,45552008495164,45552008527932,45552008560700,45552008593468,45552008626236]},"available":true,"name":"One Piece Thermal Underwear Royal Blue - US 4T \/ royal blue","public_title":"US 4T \/ royal blue","options":["US 4T","royal blue"],"price":5900,"weight":363,"compare_at_price":5900,"inventory_management":"shopify","barcode":"661826893513","featured_media":{"alt":null,"id":37954944270396,"position":1,"preview_image":{"aspect_ratio":0.666,"height":1688,"width":1125,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}},{"id":45552008626236,"title":"US 5T \/ royal blue","option1":"US 5T","option2":"royal blue","option3":null,"sku":"3bd2c5d2-6b19-4efe-8e49-a23db47b822d","requires_shipping":true,"taxable":true,"featured_image":{"id":48033578418236,"product_id":8947296239676,"position":1,"created_at":"2026-06-16T11:10:51-04:00","updated_at":"2026-06-16T11:10:52-04:00","alt":null,"width":1125,"height":1688,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652","variant_ids":[45552008331324,45552008364092,45552008396860,45552008429628,45552008462396,45552008495164,45552008527932,45552008560700,45552008593468,45552008626236]},"available":true,"name":"One Piece Thermal Underwear Royal Blue - US 5T \/ royal blue","public_title":"US 5T \/ royal blue","options":["US 5T","royal blue"],"price":5900,"weight":363,"compare_at_price":5900,"inventory_management":"shopify","barcode":"661826893520","featured_media":{"alt":null,"id":37954944270396,"position":1,"preview_image":{"aspect_ratio":0.666,"height":1688,"width":1125,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}]

{"id":45552008331324,"title":"US 12 \/ royal blue","option1":"US 12","option2":"royal blue","option3":null,"sku":"fa937194-2ca5-4814-8530-cf93d9ca8631","requires_shipping":true,"taxable":true,"featured_image":{"id":48033578418236,"product_id":8947296239676,"position":1,"created_at":"2026-06-16T11:10:51-04:00","updated_at":"2026-06-16T11:10:52-04:00","alt":null,"width":1125,"height":1688,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652","variant_ids":[45552008331324,45552008364092,45552008396860,45552008429628,45552008462396,45552008495164,45552008527932,45552008560700,45552008593468,45552008626236]},"available":true,"name":"One Piece Thermal Underwear Royal Blue - US 12 \/ royal blue","public_title":"US 12 \/ royal blue","options":["US 12","royal blue"],"price":5900,"weight":363,"compare_at_price":5900,"inventory_management":"shopify","barcode":"661826893575","featured_media":{"alt":null,"id":37954944270396,"position":1,"preview_image":{"aspect_ratio":0.666,"height":1688,"width":1125,"src":"\/\/shop.simon.com\/cdn\/shop\/files\/0e933d33e596409d85f21abf56f4cea6.jpg?v=1781622652"}},"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}

Details

This one piece thermal underwear in royal blue wraps kids in head-to-toe warmth like a cozy sleeping bag they can run around in all day. The brushed recycled polyester suit zips up with an easy asymmetric closure that makes bathroom breaks quick and getting dressed even quicker. Super soft against skin with stretchy fabric that moves with every cartwheel and snow fort construction, this full-body base layer keeps the cold out during the longest winter days.