Axolom STP Packer (2-in-1) is a soft breathable packing underwear. We release button underwear last year. We are now inventing more comfortable gears that should be easier for packing regularly. The underwear is good for 2 options such as stand to pee and packer. It provides two layers in the inside and outside. Between the two layers, there is an O layer which holds the STP packer in position. We know, positioning is very important for packing. Providing a cover to the front of the underwear through which STP PACKER is comfortable to urinate and use regularly. The Axolom STP boxer has a pouch inside which keeps it away from our genital. As a result, we can use the boxer whole day. It's a very safe point for packing. Material: 95% Modal, 5% Spandex. Color: Black, Green Wash Cold, Tumble Dry or Medium Low.