This add on is only available with the purchase of a collar as it is an add on option. 
For those that want the option to have the beaded collar with a trigger snap rather than a slip on style. 
These attach to the o ring of the collars giving it the easy on and off like a collar. Measure your pet with a soft measuring tape around the neck area where you want the collar to sit, leave 1-2 finger space in between for a comfortable fit. This is perfect for dogs that don't like the slip-on design as you put it on and off like a collar.
These are extremely durable just as the slip on design but with the ease of a collar. For those that may have a bigger head measurement than the neck area or vice versa, or just prefer this design. 
*******ADD ON ONLY, NOT SOLD INDIVIDUALLY. ANY PURCHASES WITHOUT A COLLAR PURCHASE WILL BE CANCELLED AND REFUNDED******