No slippage, no padding, no uncomfortable compression and no uni-boob-- all this from a strapless bra! Unbelievable! This bra (and all other Sassybax products, frankly) are head and shoulders and a big pair of bosoms above Spanx. I'm a 40D and wear this Sassybax underwire bandeau in LRG, and it holds me up beautifully for hours of low-impact activity without having to adjust and without smasing them down or being so tight that I can't breath. I always heard that the true engineering support came from the band and underwire and not the straps as the popular wisdom states, and this bra proves it! It also lasts through multiple washings (both hand and automatic laundering)and many years; I've worn it once or twice a month for 5 years and it's like new. I spent years not being able to wear strapless bras and then, one day, Voil! I found Sassybax on Amazon, had a coupon code and decided to try it in an apathetic round of bandeau-buying, because summer was coming and I hadn't tried to wear strapless fashions in a couple of years. The rest is happy herstory!