Stand Tall & Look Sharp with Compression Tech - This innovative body shaper for men slims your waist, enhances muscle definition & provides firm support to your abs, chest & lower back. Inspired by physio-therapy, it helps pull back shoulders & improve posture Seamless Design for Invisible Support – The seamless construction of this men's shaper slimming compression shirt eliminates chafing & bulges, delivering a smooth fit that stays undetectable under clothing while offering discreet shaping & posture support Breathable Comfort That Moves With You – Made with breathable Sorbtek(r) & flexible Lycra, this body shaping shirt for men wicks away sweat & helps regulate body temperature, keeping you fresh, dry & comfortable through long days or nights out Durable, Easy-Care Performance – Built for repeat wear, this male compression shirt holds its shape wash after wash. Simply machine wash cold & tumble dry on low to maintain its firm compression & sleek fit over time Tailored Fit for Every Body – Available in multiple sizes & colors, this men's body shaper slimming shirt is designed to move with you while enhancing your natural shape. Use our size guide to find the perfect fit & experience the Rounderbum difference The Rounderbum Promise – Our mission is simple: revolutionize men's shapewear with innovative, confidence-boosting designs. Look more attractive, feel more athletic & move through your day with greater comfort & unmatched confidence Stand taller, feel stronger, and smooth your silhouette with the Rounderbum Seamless Compression Tank Top — a men’s slimming body shaper tank top designed to define your upper body while keeping comfort front and center. This isn’t just men's shapewear — it’s confidence you can wear, every single day. Featuring our signature Compression Tech, this seamless shape shirt for men offers targeted compression to the abs and lower back while gently pulling back the shoulders to promote better posture. It also provides chest compression to help minimize the appearance of gynecomastia ("man boobs"), giving you a firmer, more masculine look. The physio-therapy-inspired design helps shape your torso, enhance muscle definition, and support your core whether you're layering it as an undershirt when heading to the office or dressing to impress. All that, in a fit so sleek and discreet, no one will know it's there. Made with a performance blend of 92% polyamide Sorbtek and 8% Lycra, this men’s body shaper tank top helps regulate temperature, wicks away sweat, and moves with your body through long days and busy nights. The seamless construction eliminates chafing and bulges, giving you smooth, sculpted support that stays invisible under everything from T-shirts to button-downs. Rounderbum is changing the game in men’s shapewear with designs that are functional, flattering, and built to last. Whether you’re looking for subtle slimming, a posture boost, or a little more confidence in your clothes, this sleeveless body shaper for men delivers results you can feel without sacrificing comfort. Available in four inclusive sizes — Small, Medium, Large, and Extra Large — so everybody can find their perfect fit. Check our size chart to see which one’s right for you. Care Made Simple: Machine wash cold on a gentle cycle. Do not bleach or use fabric softener. Hang dry in the shade or tumble dry low. Do not iron or wring. Own your shape. Stand tall. And experience the comfort of compression that works with your body, not against it.