I have these from Amazon and I really like the size. Readable but smaller than many. I use one on either side of my (rather petite) Border Collies vest. But you could use one across the back of a smaller dog. Service Dog Ignore Me I'm Working Warning Vests/Harnesses Tactical Military Morale Badge Emblem Embroidered Fastener Hook and Loop Patches Appliques 3.93 x 1.18 Inch Bubble of 2PCS https://www.amazon.com/dp/B07SDP1WRT/ref=cm_sw_r_cp_api_fabt1_1wQVFbWYJRB4G