All Lupine ®products are proudly built in Conway, New Hampshire and GUARANTEED (Even if Chewed)®!1” wide Combo collars are suitable for medium and larger dogs. Features strong bar-tack stitching and welded D-rings. A limited-slip martingale-style collar for walking and training. It should not be left on an unattended or unleashed dog.Slips on over the head. To determine collar size, measure around the middle of the dog's neck, AND around the widest aspect of the head. Allow an extra 5% to the longer measurement for a comfortable fit. Lupine products are not recommended for tie-out.Machine wash, warm water, mild soap (no bleach or bleach alternative). Air dry.