Anser D01 Pet Collars for Dogs Cat Collar 3M Reflective Nylon Neoprene Padded Dog Collar Size M:3/4" Wide * 14.5-18" Neck; Size L:3/4" Wide * 18-21.5" Neck Thickened outer nylon webbing, width 3/4 "to provide sufficient strength, the inner Neoprene, pet comfortable to wear. For security reasons, delicately embedded part of the neoprene collar with 3M reflective materials. The loop tied to the logo is specifically designed for the purpose of attaching dog charms, tags, pendants or accessories. Please do not attach any dog leash with this loop. The collar is not made for the purpose of tie out. Please measure your pets carefully to make a safe and fit purchase. Always look at the size chart for the recommended weight range to confirm the size.