Snow Peak Slip Collar Olive Medium. Fit the SP Slip Collar gently over the head. When the dog pulls the collar will gently apply pressure as an indication of unwanted behavior. Features an adjustable buckle a comfortable neoprene lining and metal fittings. Pair with the SP Rope Lead Olive for a complete set. Specifications for Snow Peak Slip Collar: Manufacturer: Snow Peak Color: Olive Fabric/Material: Polyester Foamed Chloroprene Weight: 4 oz Package Contents: Snow Peak Slip Collar Snow Peak PT-211: Slip Collar Olive Medium