CoyoteVest SpikeVest Dog Harness Vest for Small Dogs, Reflective Dog Vest with Spikes to Shield Your pet from Coyotes, Raptor and Animal Attacks, Anti Hawk Vest, Made in USA (L-Pink)COYOTE DOG VEST: PLEASE READ SIZING GUIDE BEFORE PURCHASING! Like a CoyoteVest, the purpose of the SpikeVest is to help slow down or prevent a surprise attack and give you enough time to react before serious injury occurs. The main difference is the SpikeVest uses two wide belts with Velcro while the CoyoteVest uses nylon straps with snap buckles. DOG HARNESS SIZES: For a proper fit please check the sizing chart and measure your dog before ordering.