Coloplast (fka Mentor) Alpine - Odor-free Reusable Latex Urinary Drainage Leg Bags are the only reusable leg bags that offer two layers of protection. The first layer locks in fluid while the second layer traps odor. The Alpine urine bag comes with a twist style outlet and a quick release bottom outlet. The optional offset entry port is specifically designed for a person in a wheelchair. The left and right offset represent which leg the bag is designated for, when used on the inside of the leg. These leg bags from Coloplast (fka Mentor), formerly Mentor, lead the way in comfort and confidence.