The Cat Self Defense Key-chain can be attached to keys or easily stowed elsewhere You put your fingers through the eye holes and the tips of the ears can be used to defend your self Constructed of lightweight yet Durable Polymer Measures 3.25 x 2.25 and only .125 thick Made in the USA The Cat Self Defense Key-chain can be attached to keys or easily stowed elsewhere You put your fingers through the eye holes and the tips of the ears can be used to defend your self against an attacker Constructed of lightweight yet Durable Polymer Measures 3.25" x 2.25" and only .125" thick Made in the USA