The Rounderbum Lift Trunk Boxer is specially designed with Lift Tech. This allows a Push-up effect without the need for padding. Patented design. 4-way stretch fabric. Undetectable to the eye. Underwear made with premium materials. Made with 93% premium cotton and 7% elastane. Subtly defines your buttocks. Comfortable and lightweight, with the ideal fit for every day. Noticing your bum is not as plump or perky as it used to be? Then this the perfect underwear for you! Its hidden band design creates a push-up effect that lifts your cheeks like they were in your glory days. Superior comfort and design in men's shapewear. SAY GOODBYE TO SAGGY JEANS! We want everyone to be able to join the Rounderbum experience, that's why we have 3 different sizes for you to choose the perfect one. Small, Medium and Large. Make sure to check out the size chart! We started to change the world in men´s undergarments. With a growing trend of men who take care of their appearance, we created a men's line specially for those who want to look more attractive, athletic and are in need of body enhancing underwear. We strive for perfection and our commitment is to make garments that make every man feel and look better, more masculine and confident.