Handcrafted products from start to finish. Handcrafted products from start to finish. Made with a 5cm strip these collars are manufactured with the highest quality materials around! Consisting of two layers of soft, strong polypropylene tape and an extra, decorative layer these hand-stitched and riveted collars are designed to withstand an unusual level of force so even the strongest dogs remain comfortably at the end of the lead, as opposed to dashing off into the distance. For the best fit aim for the middle of the suitable size range. 38cm-45cm Neck (+/- 1cm tolerance) – Comes with four weights, total weight approx. 1.446kg 43cm-51cm Neck (+/- 1cm tolerance) – Comes with five weights, total weight approx. 1.726kg 47cm-55cm Neck (+/- 1cm tolerance) – Comes with six weights, total weight approx. 1.765kg 52cm-60cm Neck (+/- 1cm tolerance) – Comes with seven weights, total weight approx. 2.110kg 57cm-65cm Neck (+/- 1cm tolerance) – Comes with eight weights, total weight approx. 2.500kg Please use this product in moderation and consider feeding the dog more food after use to ensure no excessive loss of weight! TheMega Weighted Strip Collar is suitable for any: Cane Corso Bull Dog American Bulldog Presa Canario English Bull Terrier Foxhound German Shepherd Newfoundland Rottweiler Great Dane Dogue De Bordeaux Bullmastiff Bully Kutta Neapolitan Mastiff Argentine Dogo Japanese Tosa Alano Espanol English Mastiff Rhodesian Ridgeback Boerboel, or other similar breed.