Fits up to 64cm. The Remote Control Vibration Collar is a great product for Training Recall, preventing Chasing, Digging & much more. It features two different training modes, sound & vibration and four correctional levels, low, medium, high & manual. The collar features a 50 metre range so is great for distance training & comes complete with a detachable wrist strap to keep the remote to hand. The adjustable nylon collar with plastic quick release clasp means the collar is simple and easy to fit. Free DVD training guide included.