2.25” Only tried on with socks. I didn’t measure his paws well. **PLEASE see 8th picture for sizing guide** Winter Traction & Insulation - The Polar Trex dog snow boots provide warmth, traction, and protection so those paws can keep exploring in winter conditions - Waterproof, windproof, breathable softshell upper fabric - Constructed with an insulated softshell upper for breathable, weatherproof warmth in extreme cold and inclement weather. The Ruffwear-designed Vibram® Icetrek™ outsole provides traction on frozen surfaces and is a barrier against cold and snow-melt chemicals - The hook-and-loop closure cinches at the narrowest part of the dog’s leg for a secure fit - Zip the stretch gaiter over the closure to protect the hook-and-loop from snow build-up - Reflective trim for visibility in low-light conditions **Just as you would with your gear, adjust fit and check tension of boot straps 15 minutes into your activity and throughout the adventure as needed** *Set of TWO boots. Many dogs have wider front paws than rear paws.*