Seamless t-shirt bras do a great job under tees and knits, but sometimes you're still left with back bulges and lines. A back-smoothing bra can make back fat disappear. Look for features like leotard backs and wider back and side bands to help smooth away unsightly lines. Completely seamless bras, made with ultra-lightweight fabrics are also a good bet. There are dozens of styles to choose from, including soft cup bras, racer backs, strapless bras, front-close bras, demi-cups full-coverage cups and more.High-tech fabrics like spacer foam are so light and sleek against the body that they virtually disappear under clothing. Don't let back fat ruin a perfectly good tee shirt--HerRoom's selection of back smoothing t-shirt bras give you a polished, sleek look from every angle.