Kewlioo Compression Vest — Dark grey, Size 4XL, Polyester Blend

f you're looking for a sauna shirt that actually works all day — not just at the gym — the Kewlioo Men's Sauna Shirt was built for you. Whether you're pushing through a cardio session, lifting weights, running errands, or heading to work, this heat-trapping sweat vest keeps your core warm and your sweat game strong from the moment you put it on. Built to layer. Designed to perform. Unlike bulky sauna suits, the Kewlioo sauna shirt is slim enough to wear discreetly under a t-shirt, hoodie, or tracksuit — no bunching, no bulk. The snug compression fit wraps your torso and core, encouraging upright posture and keeping muscles feeling warm between sets and throughout the day. It's the sauna shirt men actually want to wear everywhere, not just at the gym. Premium materials. Long-term durability. Crafted with a durable 90% polyester / 10% spandex outer layer and a polyurethane inner lining, the Kewlioo sauna shirt is engineered to retain heat wash after wash — no cracking, no stiffness. It's machine washable and ready for every session. This is the Kewlioo difference: premium construction that outlasts cheaper sweat vests that fall apart after a few uses. One shirt. Every workout. Every day. The anti-slip waistband stays in place during gym sessions, boxing, basketball, cycling, running, and everyday wear — so you're always focused on moving, not adjusting. If you've been asking "what's the best sauna shirt for working out and daily use," this is your answer. Sizing tip: This sauna shirt is designed with a close-to-body fit for maximum heat retention. If you're between sizes or prefer a more relaxed feel, we recommend sizing up.

• SNUG & TIGHT FIT - PLEASE SIZE UP: If you're in between sizes or want some extra room we recommend picking 1 size larger then your normal size. This Sauna Shirt works best when it fits closely to your body so it can really work it's magic and get the make every step count.
• PERFECT SIZE FIT - Finally a full body shaper that fits your size. Most of the other waist slimmer compression body suit got it wrong and offer an uncomfortable experience with an undersizing design. At Kewlioo, WE worked the perfect sizing for YOU.
• SWEAT MORE - Sweat hard, keep dry: this garment was designed to increase perspiration but keep it all inside. Kewlioo sauna suit stimulates sweat during exercise 3x times more than normal clothing to aid in burning fat by preserving body heat where it matters most: your abs, lower back, chest & waist. The waist slimmer makes you sweat in the right spot using the comfort antislip waistband that is absorbing sweat so you're always dry on the outside.
• PREMIUM QUALITY - Made from high-quality polymer fabric, this waist toner traps the heat and intensifies natural sweating 3x times more so you'll enjoy a hot-sauna-like experience and the associated health benefits. More sweat, less time. This shaper workout shirt will make you look slimmer INSTANTLY. It's built with a special technology that compresses the belly and hips. You can wear it with other exercise equipments and everyday clothes.
• BYE BELLY FAT - This compression t-shirt for men is the secret weapon for your fitness journey, simply wear it discreetly under any outfit and WATCH your body TRANSFORM! Put this waist toner on and INSTANTLY feel how it tucks your tummy in, trims your waistline and give you a more toned and athletic look. (while working it's magic in the background)