Namsan Puppy Dog Pet Collars Necklaces With Cute Flower (black,blue,pink,red) &(Small, Medium) Neck size : M 11.4 * 15" (29--38CM) beautiful as design,5 holds Adjustable material: leather and stainless steel, soft and not stiff Please double confirm the size, not suitable for cats Namsan's order usually 7-15 days arrived US