The Buckb d 4mm Leash has an adjustable push button bead that allows you to adjust the leash to multiple sizes. This is perfect for Trans/FTM people who havenb t had bottom surgery and have a smaller penis size making this the perfect design for Trans/FTM people or anyone for that matter. The leash also fits men of all shapes and sizes, so itb s not a product that is only targeting Trans/FTM men, this leash can be worn by one and all. The leash is 100% medical grade silicone. The push button ABS bead allows for endless adjustment possibilities. The bead lets you loosen or tighten the leash for easy removal after use. ?Fully Adjustable Leash? - Press Button Latch? -100% Soft Touch Silicone? - Incredible Durability? - Care Instructions: This product is safe with all lubricants. Wash thoroughly with mild soap and warm water or toy cleaner. Pat dry and allow product to completely air dry. Store separately.