--- product_id: 47681659 title: "Men's J-t-m-1836" brand: "thermajohn" price: "¥15880" currency: JPY in_stock: true reviews_count: 13 url: https://www.desertcart.jp/products/47681659-mens-j-t-m-1836 store_origin: JP region: Japan --- # Advanced moisture-wicking Superior heat retention Ultra-soft fleece lining Men's J-t-m-1836 **Brand:** thermajohn **Price:** ¥15880 **Availability:** ✅ In Stock ## Summary > 🔥 Elevate your winter game with Thermajohn – warmth that moves with you! ## Quick Answers - **What is this?** Men's J-t-m-1836 by thermajohn - **How much does it cost?** ¥15880 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/47681659-mens-j-t-m-1836) ## Best For - thermajohn enthusiasts ## Why This Product - Trusted thermajohn brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Cloud-Like Comfort:** Ultra-soft fleece lining ensures cozy softness against your skin. - • **Stay Toasty All Day:** Engineered for maximum heat retention to keep winter chills at bay. - • **Dry & Fresh Confidence:** Breathable moisture-wicking technology keeps you dry during active days. - • **Move Freely, No Limits:** 4-way stretch fabric offers unrestricted mobility without bunching or chafing. - • **Perfect Layering Essential:** Ideal base layer for layering up—whether outdoors or lounging at home. ## Overview Thermajohn Men's J-t-m-1836 long johns combine advanced heat retention, ultra-soft fleece lining, and moisture-wicking breathable fabric with 4-way stretch technology, delivering a premium thermal base layer designed for all-day comfort and freedom of movement in cold weather. ## Description Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather (Medium, Navy) ## Features - Heat Retention: When it comes to warmth and everyday wear, these long johns for men is designed specifically for you to stay protected from the cold. - Ultra Soft Fleece: Designed with a fleece lining & quality material, these ultra soft mens thermal underwear set will keep you feeling comfortable throughout the day. - Moisture Wicking: Stay dry with these long underwear mens as they're made from breathable fabric that effectively wicks away moisture and perspiration. - 4 Way Stretch: Made with stretchable material, these thermals for men allows you freedom of movement with no chafing or bunching up when you move. - Layer Up: Layering is essential to ward off the cold, so bundle up with a pair of mens thermals this winter and stay comfortable while outside or in bed as a pajama. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0CPRQ63XV | | Best Sellers Rank | #72 in Men's Thermal Underwear Bottoms | | Date First Available | November 23, 2015 | | Department | mens | | Manufacturer | Thermajohn | | Package Dimensions | 12.32 x 9.37 x 2.17 inches; 14.07 ounces | ## Images ![Men's J-t-m-1836 - Image 1](https://m.media-amazon.com/images/I/51qMowmobXL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: My son's 6 ft to 6 ft 2, and 140 lbs, large in undershirts and small in underwear. what size should i order for him?** A: I'm 6'4" 180lbs, and was always like that as a teenager- large tops, small or sometimes medium bottoms. I filled out in my 20s-30s when I stopped skipping leg days, to be more like L bottoms, XL tops. Now, in my 40s, I'm a L top and 34"w x36L in Balmain, Gucci, Mike Amiri, Raf Simons, Ralph Lauren, Dulce & Cabana etc., actually I have an aunt who detests $2000+ for jeans and sends me Levi's every Christmas to make a point. 32 waist (well hips actually idk who wears jeans up that high but if it did I could actually wear a 28" or 30" but then I would need a 40"-42"L LOL Shop clerk, "Can I help you with anything sir? Mmm yes, I'd like to try on a 28Wx42L in these dodgy looking Walmart jeans please shop keep, I cannot seem to find anything on the rack 🤔?) Crazy. So I tried XL. Ha. No way. Maybe 1 leg in each of 2 pair, otherwise, mmmno. XXL was too tight (stretched too thin in my glutes, thighs & calves, and still too short -- looked like I was waiting for the flood. 3XL made all the difference. If he's 6'2" but under a buck fifty, XXL will give him a good fit + room to grow. I should have considered that - if I was 2 inches taller ( 6'6" ) these would be too short and then all the extra material that fits me as I am, would be higher up and therefore too small. So, long story short, XXL now [✓] If you anticipate him growing much more in the near future: 3XL. Good luck! 👖👕🧦🧤🧥🧣🛍️🩲🧢👟🥾⌚💎🎒👜👓🕶️ **Q: My husband is 6 ft 155 lbs. so tall and skinny. What size should I get him?** A: My husband is 5' 8'" and weighs up to 175 at his heaviest. I got a medium for him and the length was just perfect. As the other person said, they fit like tights or like a good athletic shirt that I can't name but will stretch depending on the size of the person. I would think a large would be needed for his height. **Q: Im 6ft 5 and 219 what size should i get?** A: I'm 6 2", 230 and I got xxl. If I bought again I'd get xxxl. They run small, and are a stretchy material that's comfortable but really hugs the skin. Pretty nice overall, though. **Q: Im 5'5 and 180 lbs with a waist between 32 and 34. What size should i get?** A: X-large they run small ## Customer Reviews ### ⭐⭐⭐⭐⭐ Your Hot, Thermajohns! *by on Reviewed in the United States August 2, 2026* These are surprisingly warmer than I expected after receiving them. Seem very thin and not warm at all. WRONG! Light weight of product is very deceiving. Outfit is very warm when needed and not at all bulky like some of years ago. Very pleased with product. ### ⭐⭐⭐⭐⭐ 5-Star Review for Thermajohn Long Johns – AKA My Cold Weather Survival Suit *by on Reviewed in the United States June 2, 2025* I never thought I’d be this emotionally attached to a pair of long johns, but here we are. The Thermajohn Thermal Underwear Set is like a warm hug from a teddy bear who also happens to be a professional insulation expert. Seriously—this fleece-lined base layer has no business being this cozy.I put them on during a cold snap and haven’t looked back since. I’ve worn them under jeans, joggers, and even pajama pants (don’t judge me). I’d wear them to work if I could. They’re warm but not bulky, stretchy without being saggy, and soft enough to make you question every other piece of clothing you own.Also, shoutout to the waistband for staying in place and not playing “let’s roll down every 10 minutes.” These long johns understood the assignment.If you’re looking to brave the cold while feeling like a warm cinnamon roll, these are it. Buy them. Your frozen thighs will thank you. ### ⭐⭐⭐⭐⭐ Keeps me warm *by on Reviewed in the United States July 27, 2026* Keeps me warm ## Frequently Bought Together - Thermajohn Long Johns Thermal Underwear for Men Fleece Lined Base Layer Set for Cold Weather - Alvada Warm Thermal Wool Socks for Winter Moisture Wicking and Breathable Cozy Boot Socks - ihuan Winter Waterproof Ski Gloves Men Women, Snow Warm Cycling Cold Weather, Driving Biking Running --- ## 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/47681659-mens-j-t-m-1836](https://www.desertcart.jp/products/47681659-mens-j-t-m-1836) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-17*