I-Fashion Adjustable Silicone Dog Muzzles FDA level comfortable Silicone dog muzzle to anti-bite,anti-bark for meduim and small dog Unique design, keep your beloved little pet from biting, barking,eating street food or licking wounds FDA level comfortable Silicone,100% safe, non-toxic, odorless and washable Soft and cozy, your pet will feel comfortable to wear Durable and adjustable strap with quick-release buckle S: Mouth round:140mm,Head round:260mm;M:Mouth round:170mm,Head round:260mm;L:Mouth round:200mm,Head round:330mm;XL:Mouth round:230mm,Head round:330mm