Description The aroma of a wet dog can sometimes be overpowering, but the smell of a wet collar after a few hours can be pretty ripe! Who wants that smell in your home, car, RV or tent? No one! The answer... This BPA Free waterproof collar!A > Silicone rubberA > Reflective mountain printA > AdjustableA > Snap buckleA > Lightweight aluminum D-ringA > Odor-FreeA > BPA FreeSizes:Small - 1"(W) x 11-14" DiameterMedium - 1"(W) x 14-20" DiameterLarge - 1"(W) x 20-26" Diameter