Namsan Leather Cat Collar with Spikes Cat Collar -Neck size 8-11 inch (20-28cm) Double confirm size please, it is smaller than others 5 adjustment holes Package Included: 1 x Pet Collar Namsan Delivery: FBA (Fulfillment By Amazon) can be delivered for 1 day. FBM (Fulfillment By Merchant) will take 6-14 days, not as Amazon shows: 14-28 working days.