Lupine Dog Training Collar- Combo collar; dual purpose for walking & training. Not intended for use as tie out; should not be left on unattended or unleashed dog. -Prevents dog from backing out of the collar. If the dog goes to slip out of collar, it will tighten some to prevent dog from getting loose. -Also known as a martingale or limited slip choker. Allows dog to have a looser and more comfortable fitting collar, but the added safety that the dog will not be able to slip out of it. -1” wide and suitable for medium to extra large dogsSizing: Medium to Large(15-22”) or Large to XL (19-27”)***Please measure your dog’s neck before purchasing to avoid having to exchange for a different size later. To determine appropriate collar size, use a dressmakers tape (or string, shoe lace, etc) to measure around the middle of the dog’s neck AND the widest part of the dog’s head. Add 5% to the larger measurement for wiggle room. This collar does not have a buckle, so it must be large enough to fit over your dog’s head. Once the collar is on your dog, adjust it so that its smaller. -Brand new with tags from authorized Lupine dealer-Many patterns to choose from; select from drop down menu-Lifetime Guarantee… Even if Chewed! -Proudly made in the USA Collar DetailsOne inch wide nylon webbing is made for the largest and strongest dogs. Fully adjustable and heavy duty.D-Ring: Lupine’s welded steel D-ring is rust resistant and designed to hold up to years of heavy use.Tri-Glide: The non-slip teeth molded into the nylon plastic tri-glide keeps the collar at the correct size even with the strongest of pullers.Stitching- Lupine utilizes the bar tack commonly used in mountain climbing products where superior strength is crucial. Webbing- Lupine webbing is of the highest quality jacquard nylon. Never printed or ribbon overlay and tested for color fastness, you can expect your Lupine webbing to withstand the rigors of time, your washing machine and of course, your dog and still look fabulous year after year!Proudly made in the USA by a company that stands behind their products 100% Buy with confidence and never buy another collar again. Please check out my other items for a wide selection of other Lupine products! About Lupine Products Collars and leashes that are guaranteed for life- even if chewed!! v Created in woven nylon with the highest quality workmanship and materials, the same materials used for climbing harnesses. v Permanent patterns are woven in, not printed on or attached via a fabric overlay. These vibrant designs will never rub off or fade away. v And the best part is the guarantee- Lupine stands behind their products 100%, making them the best in the industryv If there’s ever a problem, we’ll replace it… FREE!! (customer pays shipping)v Lupine products come in 3 different widths- ½”, ¾” and 1”, to fit all size dogs. PaymentPaypal only, payment due at time of sale. Unpaid item dispute will be opened after 4 days of non-payment. Please ask any questions about the item before purchasing. ShippingFREE SHIPPING! I ship via USPS First Class Mail Parcel (2-5 day delivery) within one day of cleared payment.I will accept exchanges or issue refunds as long as the collar/leash is unused and still has the tags on. In case of return, refund will be issues for purchase price minus shipping cost (shipping costs are nonrefundable). If the collar is ever damaged or defective in any way (this includes chewing accidents!), simply send it back to Lupine, the manufacturer, for a free replacement. Buyer is responsible for shipping costs, including a restocking fee to cover initial shipping costs. FeedbackI will leave positive feedback for you when your item is packaged up and ready to ship. Please be sure to leave positive feedback for me when you receive the shipment. If you unhappy with the transaction for any reason, please contact me before leaving negative or less than 5 star feedback so that we can resolve the issue. Your satisfaction is very important to me! Thanks for looking!!