--- product_id: 770634679 title: "Rocky Thermal Underwear for Boys Cotton Knit Thermals Kids Base Layer Long John Pajamas Set" brand: "rocky" price: "¥2864" currency: JPY in_stock: true reviews_count: 10 category: "Rocky" url: https://www.desertcart.jp/products/770634679-rocky-thermal-underwear-for-boys-cotton-knit-thermals-kids-base store_origin: JP region: Japan --- # Rocky Thermal Underwear for Boys Cotton Knit Thermals Kids Base Layer Long John Pajamas Set **Brand:** rocky **Price:** ¥2864 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Rocky Thermal Underwear for Boys Cotton Knit Thermals Kids Base Layer Long John Pajamas Set by rocky - **How much does it cost?** ¥2864 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/770634679-rocky-thermal-underwear-for-boys-cotton-knit-thermals-kids-base) ## Best For - rocky enthusiasts ## Why This Product - Trusted rocky brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description desertcart.com: Rocky Thermal Underwear for Boys Cotton Knit Thermals Kids Base Layer Long John Pajamas Set (Black - XX-Small) : Sports & Outdoors Review: Great price, great set! - This set was perfect for our son's costume this year. After reading some reviews, I ordered a size up (Medium) for our boy who normally wears a Small 5/6T. I wanted it a little lose not snug fit. It fits nicely in the waist and length on our tall ,lean boy. The material is good quality, color was bright and item just as described. Our son said is soft and comfy. Material is even softer after washing. Would definitely recommend for warm under clothing wear or pajamas! Review: Good buy - I bought for pyjamas. I have a very slender 11-y/o grandson. Bottoms are a little loose, but are fine for sleeping. My 9-y/o grandson is more average in weight. Fits good. They both are a little tall. I ordered large for both. Very soft and warm. Well made. Good price. ## Features - 2 PIECE SET: This Rocky cotton knit thermal underwear for boys set is designed for comfort with Polyester wicking microfibers. These boy's thermal underwear are stretchy comfortable. - WONDERFULLY WARM: Rocky's thermal underwear for boys is perfect for use underneath formal or casual attire at work or for a day out, or the thermal underwear can be worn as comfy pajamas on cold, chilly nights. - PREMIUM GRADE FABRICS: Rocky thermal underwear for boy's is made from 55% Cotton and 45% Ultra-Soft Polyester, these thermal long johns have the perfect blend of comfort, warmth, elasticity, and moisture protection. - MOISTURE WICKING: Designed to keep you dry, this long-sleeved shirt and long pants are made to be wick away sweat and other moisture, this thermal underwear for boys set will do its job no matter how active you are. - BASE LAYERS: When going out to jog, run, bike or cycle in the cold, make sure to use the rocky thermal underwear for kids set under your clothing to keep warm and cozy in freezing cold climates or bad weather. These thermal underwear are stretchy & comfortable. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07CV1GJQ6 | | Age Range Description | Kid | | Apparel Closure Type | Pull On | | Best Sellers Rank | #500,436 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #632 in Boys' Pajama Sets | | Brand Name | Rocky | | Collection Name | Winter | | Color | Black | | Customer Reviews | 4.4 out of 5 stars 1,451 Reviews | | Fabric Type | 55% Cotton and 45% Ultra-Soft Polyester | | Fabric type | 55% Cotton and 45% Ultra-Soft Polyester | | Material Type | Polycotton | | Neck Style | Crew Neck | | Number of Items | 2 | | Pattern | Solid | | Size | XX-Small | | Sleeve Length Description | Long Sleeve | | Sleeve Type | Long Sleeve | | UPC | 810829030054 | ## Images ![Rocky Thermal Underwear for Boys Cotton Knit Thermals Kids Base Layer Long John Pajamas Set - Image 1](https://m.media-amazon.com/images/I/71ewkSjsisL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great price, great set! *by Q***S on October 28, 2020* This set was perfect for our son's costume this year. After reading some reviews, I ordered a size up (Medium) for our boy who normally wears a Small 5/6T. I wanted it a little lose not snug fit. It fits nicely in the waist and length on our tall ,lean boy. The material is good quality, color was bright and item just as described. Our son said is soft and comfy. Material is even softer after washing. Would definitely recommend for warm under clothing wear or pajamas! ### ⭐⭐⭐⭐⭐ Good buy *by D***D on October 3, 2020* I bought for pyjamas. I have a very slender 11-y/o grandson. Bottoms are a little loose, but are fine for sleeping. My 9-y/o grandson is more average in weight. Fits good. They both are a little tall. I ordered large for both. Very soft and warm. Well made. Good price. ### ⭐⭐⭐⭐⭐ Great boy’s Thermal Set! *by F***F on November 10, 2020* I purchased it for My 9 year old grandson, I got size large, it’s just a bit big in the waist, and the bottom is a bit long, but I expected that, he will grow into it. The medium would have been too small. He loves it. Good quality and nice feel against the skin. The waist band is not rough. I got two! Good stuff. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/770634679-rocky-thermal-underwear-for-boys-cotton-knit-thermals-kids-base](https://www.desertcart.jp/products/770634679-rocky-thermal-underwear-for-boys-cotton-knit-thermals-kids-base) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-11-05*