--- product_id: 171064191 title: "COLORFULLEAF Men's Cotton Thermal Underwear Union Suits Henley Onesies Base Layer" brand: "colorfulleaf" price: "$99.81" currency: USD in_stock: true reviews_count: 13 category: "Colorfulleaf" url: https://www.desertcart.us/products/171064191-colorfulleaf-mens-cotton-thermal-underwear-union-suits-henley-onesies-base store_origin: US region: United States of America --- # Full-button placket + rear fly for easy wear 4% spandex for flexible, body-hugging fit 48% cotton & rayon blend for ultra softness COLORFULLEAF Men's Cotton Thermal Underwear Union Suits Henley Onesies Base Layer **Brand:** colorfulleaf **Price:** $99.81 **Availability:** βœ… In Stock ## Summary > πŸ”₯ Stay warm, look sharp, and never miss out on cozy vibes! ## Quick Answers - **What is this?** COLORFULLEAF Men's Cotton Thermal Underwear Union Suits Henley Onesies Base Layer by colorfulleaf - **How much does it cost?** $99.81 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/171064191-colorfulleaf-mens-cotton-thermal-underwear-union-suits-henley-onesies-base) ## Best For - colorfulleaf enthusiasts ## Why This Product - Trusted colorfulleaf brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **All-Over Warmth:** Single-piece union suit design locks in heat, perfect for layering or solo wear. - β€’ **Cloud-like Comfort:** Ultra-soft cotton-rayon fabric feels like a second skin for all-day coziness. - β€’ **Effortless On & Off:** Functional full-button closure and rear fly combine convenience with classic style. - β€’ **Versatile Winter Essential:** Ideal for outdoor work, sports, or loungingβ€”keeps you warm without bulk. - β€’ **Gift-Ready & Family-Friendly:** A witty, practical gift that doubles as a cozy statement for family photos or winter travels. ## Overview The COLORFULLEAF Men's Cotton Thermal Union Suit blends 48% cotton, 48% rayon, and 4% spandex into a lightweight, stretchy base layer featuring a full-button front and rear fly. Designed for all-day warmth and comfort, this fitted one-piece is perfect for cold-weather activities or relaxing at home, making it a top choice for men seeking functional style and cozy performance. ## Description Buy COLORFULLEAF Men's Cotton Thermal Underwear Union Suits Henley Onesies Base Layer (Black, L): Shop top fashion brands Clothing, Shoes & Jewelry at desertcart.com βœ“ FREE DELIVERY and Returns possible on eligible purchases Review: very nice Union suit underwear - this a very comfortable, good looking, warm and great fitting. the fabric is not too thin or thick and feels very soft and the rear flap works great. I have used many other brands but these are one of my favorite now Review: Comfy and Warm - Bought these for my boyfriend since he works outside and he loves them, even lounges in them around the house. They fit fine, for reference we got him an XL and he is 6'1" and skinny. They may be a smidgen long but if we had sized down the sleeves would have been short on him, as he has long limbs. Think skinny tree and that's my man, haha. They definitely help keep him warm without him feeling constricted which is great for the work he does. We'll be buying a few more pairs soon! ## Features - SOFTNESS AGAINST YOUR SKIN: These One-piece thermal union suit is made of 48% cotton, 48% rayon, 4% spandex, ultra soft to sleep in, warm enough to lounge around the house and stretchy fit for most body types - FUNCTIONAL BUTTON-UP CLOSURE DESIGN: The one-piece pajamas features full-button placket to easily put on and take off; Rear fly opening for convenience - SINGLE-PIECE FITTED UNION SUIT: One piece thermal gives complete body warmth and reduces buck, making it perfect for layering - PRACTICAL USE FOR ANY OCCASIONS: Long sleeve onesie in double-layer thermal; Keeps you warm in cold outdoor working, cycling, hiking, skiing or other winter activities, living or traveling to cold places - THOUGHTFUL EVENT GIFTS FOR FAMILIES: If you are looking for adult onesies pjs that would be comfortable to get ready in, cute for a humorous family photo, ideal onesie undergarment for warmth ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07W6YGYYH | | Age Range Description | Adult | | Apparel Fabric Stretch | Medium Stretch | | Apparel Fabric Weight Class | Lightweight | | Best Sellers Rank | #748,168 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #11 in Men's Thermal Underwear Union Suits | | Brand Name | COLORFULLEAF | | Care instructions | Machine Wash | | Closure Type | Button | | Color | Black | | Customer Reviews | 4.5 out of 5 stars 891 Reviews | | Fabric Type | 48% cotton, 48% rayon, 4% spandex | | Fabric type | 48% cotton, 48% rayon, 4% spandex | | Import Designation | Imported | | Item Type Name | Cotton Thermal Underwear | | Material | Cotton | | Neck Style | Henley Neck | | Number of Items | 1 | | Origin | Imported | | Part Number | CFS1924_B_L | | Product Care Instructions | Machine Wash | | Size | Large | | Sleeve Length Description | Long Sleeve | | Sleeve Type | Long Sleeve | | Style | Modern | | Style Number | CFS1924_B_L | | Unit Count | 1 Count | ## Images ![COLORFULLEAF Men's Cotton Thermal Underwear Union Suits Henley Onesies Base Layer - Image 1](https://m.media-amazon.com/images/I/51Vm+eJzyRS.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ very nice Union suit underwear *by R***R on August 6, 2025* this a very comfortable, good looking, warm and great fitting. the fabric is not too thin or thick and feels very soft and the rear flap works great. I have used many other brands but these are one of my favorite now ### ⭐⭐⭐⭐⭐ Comfy and Warm *by A***N on December 17, 2025* Bought these for my boyfriend since he works outside and he loves them, even lounges in them around the house. They fit fine, for reference we got him an XL and he is 6'1" and skinny. They may be a smidgen long but if we had sized down the sleeves would have been short on him, as he has long limbs. Think skinny tree and that's my man, haha. They definitely help keep him warm without him feeling constricted which is great for the work he does. We'll be buying a few more pairs soon! ### ⭐⭐⭐⭐ Nice quality, runs long and length *by B***R on February 11, 2025* Well made, personally I would go down a size from your normal size. Extremely long. they look comfortable and warm, but not too warm. Nice buttons. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/171064191-colorfulleaf-mens-cotton-thermal-underwear-union-suits-henley-onesies-base](https://www.desertcart.us/products/171064191-colorfulleaf-mens-cotton-thermal-underwear-union-suits-henley-onesies-base) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-12*