Dockmate Fenders are made of high-quality, marine-grade vinyl and designed to deliver superior strength and long-lasting service. Molded-in eyelets provide exceptional ropehold. Rubber valve provides easy inflation with a standard sports ball needle. Fenders come pre-inflated for convenience. This Dockmate Fender Package comes with four 5-1/2" x 20" fenders to provide excellent protection for your 15' to 25' boat. 5/8" eye diameter. Includes a clear vinyl bag for easy storage. Fender lines sold separately (item 949328 - 5' lines or item 949329 - 8' lines). High-quality, marine-grade vinyl Pre-inflated for convenience Easily adjust pressure with sports ball needle | Fender Package, 5.5" x 20", 4-Pack in Blue