Pre-Printed Side Patches help identify your dog at a glance. These removable, pre-printed patches attach to select EzyDog® harnesses and packs with hook-and-loop (Velcro) backing to replace the standard EzyDog logo. Features Set of 2 pre-printed patches (one for each side) Hook-and-loop (Velcro) attachment for fast swap-outs Black & white only (pre-printed designs) Choose from multiple messages such as Service Dog , Do Not Pet , In Training , Therapy Dog , Search & Rescue , and more Compatibility (pre-printed patches) Compatible exclusively with the Summit Backpack , Convert Saddle Bags , Convert Harness , and Express Harness . Sizing Guide Express Harness : XS–L = Small patch | XL–XXL = Large patch Convert Harness : XXS–M = Small patch | L–XXL = Large patch Summit Backpack : S–L = Small patch Convert Saddle Bags : S = Small patch | L = Large patch FORMFIT® Harness owners: For patches that fit the FORMFIT Harness, see our Custom Side Patches .