--- product_id: 401739354 title: "TINFL by Vaenait 4-14 Years Boys Kids Aeroheat Thermal Underwear Base Layers Warmth Halloween Pajama Lined Long John Set" brand: "tinfl" price: "3813491β‚«" currency: VND in_stock: true reviews_count: 5 url: https://www.desertcart.vn/products/401739354-tinfl-by-vaenait-4-14-years-boys-kids-aeroheat-thermal store_origin: VN region: Vietnam --- # Moisture Wicking Aeroheat Fabric Ultra Soft & Lightweight TINFL by Vaenait 4-14 Years Boys Kids Aeroheat Thermal Underwear Base Layers Warmth Halloween Pajama Lined Long John Set **Brand:** tinfl **Price:** 3813491β‚« **Availability:** βœ… In Stock ## Summary > Stay cozy, play hard! πŸ”οΈ ## Quick Answers - **What is this?** TINFL by Vaenait 4-14 Years Boys Kids Aeroheat Thermal Underwear Base Layers Warmth Halloween Pajama Lined Long John Set by tinfl - **How much does it cost?** 3813491β‚« with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/401739354-tinfl-by-vaenait-4-14-years-boys-kids-aeroheat-thermal) ## Best For - tinfl enthusiasts ## Why This Product - Trusted tinfl brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **All-Day Dryness:** Breathable fabric wicks away sweat for a fresh feel. - β€’ **Effortless Access:** Designed with a fly open for convenience. - β€’ **Snug Fit, No Bulk:** Contours to your body without riding up or pinching. - β€’ **Stay Warm, Stay Active:** Experience the ultimate warmth with feather-light comfort. - β€’ **Versatile for All Adventures:** Perfect for indoor lounging or outdoor escapades. ## Overview The TINFL by Vaenait Aeroheat Thermal Underwear Set is designed for boys aged 4-14, featuring innovative Aeroheat fabric that provides superior warmth while remaining lightweight. With moisture-wicking properties and a snug fit, this thermal set is perfect for both indoor relaxation and outdoor activities like hiking and skiing. ## Description ## Features - PREMIUM FABRIC : Aeroheat Fabric is knitted with hollow-core heat generating thread, so it allows superior warmth and feather weight on the garment at the same time. FUNCTIONAL & BASE LAYER : These pants feature a FLY OPEN for easy access. This thermal sets good for winter pajama, base layer under chilly weathers. Excellent for outdoor activity. SWEAT MOISTURE WICKING : The breathable and stretchable fabric keep you dry all days . This thermal underwear absorb excess moisture and wick sweat away from your skin to avoid any sticky or clammy feelings you may get. ULTRA SOFT and LIGHT WEIGHT: These thermal underwear are lightweight and fit snug against the skin. They won’t bunch up and contour to the shape of your body. Can wear them on their own or under another clothes for added comfort. No bulkiness means no riding up or pinching. SUITABLE FOR INDOOR AND OUTDOOR : Perfect for at home also good for activities such as hiking, running, biking, skiing, snowshoeing, walking, etc. Material: AEROHEAT EXTREME : 94% ULTRA-SOFT Polyester and 6% Spandex Material Composition: AEROHEAT EXTREME : 94% ULTRA-SOFT Polyester and 6% Spandex ## Images ![TINFL by Vaenait 4-14 Years Boys Kids Aeroheat Thermal Underwear Base Layers Warmth Halloween Pajama Lined Long John Set - Image 1](https://m.media-amazon.com/images/I/51XhtaIHYKL.jpg) ![TINFL by Vaenait 4-14 Years Boys Kids Aeroheat Thermal Underwear Base Layers Warmth Halloween Pajama Lined Long John Set - Image 2](https://m.media-amazon.com/images/I/51ToW84sauS.jpg) ![TINFL by Vaenait 4-14 Years Boys Kids Aeroheat Thermal Underwear Base Layers Warmth Halloween Pajama Lined Long John Set - Image 3](https://m.media-amazon.com/images/I/51bIxAUf3uS.jpg) ![TINFL by Vaenait 4-14 Years Boys Kids Aeroheat Thermal Underwear Base Layers Warmth Halloween Pajama Lined Long John Set - Image 4](https://m.media-amazon.com/images/I/81xgtP6QpFL.jpg) ![TINFL by Vaenait 4-14 Years Boys Kids Aeroheat Thermal Underwear Base Layers Warmth Halloween Pajama Lined Long John Set - Image 5](https://m.media-amazon.com/images/I/71gwBDLBMKL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Best Pajamas for Kids *by A***K on Reviewed in the United States on 23 November 2021* Once again, Vaenait hits it out of the park. These pajamas are warm, soft and super durable. Will definitely be buying again. ### ⭐⭐⭐⭐⭐ Excellent for really cold weather *by T***E on Reviewed in the United States on 21 November 2021* This clothing item for boys is excellent for really cold weather. This is made by TINFL by Vaenait and is called "Thermal Underwear" or "Base Layer" to be worn under regular clothes. This is made of 94% polyester and 6% polyurethane, designed in Korea and made in Vietnam. It should be washed before wearing. This top and bottom unit should fit close to improve heat retention for the body. Also, this is NOT flame retardant, so should not be worn next to or close to open flames. The top has a round neckline and is a pullover with close fitting sleeves and cuffs at the wrists. The bottom has a crotch opening for ease of bathroom use, a wide waistband, and cuffs at the ankles. The fabric is soft brushed on the inside, and smooth on the outside. This is easy to wash and dry. This is great for wearing for camping, school, or bedtime during cold winter weather. ### ⭐⭐⭐ A great fit for slim boys *by M***T on Reviewed in the United States on 7 October 2021* These pajamas are great for layering or sleeping in during the Winter. PLEASE take time to read over sizing. My son is 8.5, weighs 88 pounds and I ordered the Large and the top is so small. I didn't even bother trying them on. I should have ordered the XL, but my concern is that the pant length would have been really long. He has Duchenne Muscular Dystrophy, so he's extra husky and it's tricky to find him warm pajamas that work. --- ## 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.vn/products/401739354-tinfl-by-vaenait-4-14-years-boys-kids-aeroheat-thermal](https://www.desertcart.vn/products/401739354-tinfl-by-vaenait-4-14-years-boys-kids-aeroheat-thermal) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-15*