[Size]: Small: 52-72cm; Medium: 69-92cm; Large: 86-100cm. [Large Storage Capacity]: Comes with two 500ml urine leg bags, urine rapidly drains from urinal into collection bag. Portable and easy to use. Wear on your body like underwear and you can move and walk without worrying about wet pants.Underwear waist with elastic belt which provides a comfortable, secure fit. [Wearable Men's Urinal with Anti Backflow Design]: An anti-reflux chamber on drainage bag to prevent urine reflux from the urine drain bag from entering back into the drainage tube. [Healthy&Comfortable]: Urinary Drainage Bag System Adopting high quality silicone material, high flexibility, skin-friendlysafe, sanitary and healthy. Unique padded rim creates a better seal and increased comfort as compared to tipical urinals. [Easy to Use]: Catheter Bags with clear graduation marks for easy- to-read; Clamps hold the tube can make urine retained at the joint of the sampling port, which is convenient for urine sampling. [Main Function]: For urinary incontinence, Ill bedridden, Elderly people who get up at night is not continent.so you can leave it unattended for hours before you need to drain it. The handle/hanger is firmly installed on the bed rail or wheelchair, which is more convenient.