Proper preparation and conditioning will make your hunts much more enjoyable. Our plastic knobby dummies are designed with a valve so you can adjust buoyancy and weight. Manufactured for durability using tough plastic vinyl. Preferred by professional trainers nationwide. Designed with air valve to adjust buoyancy and weight to simulate actual game. Soft and pliable in all weather conditions yet rugged to prevent hard mouth problems. White is excellent for throwing against dark backgrounds. Orange is easy for the trainer to see. Black is good for throwing agaist a light sky or in snowy conditions. Half Black/Half White is good for throwing against all backgrounds. Jumbo 3 x 12 size - choose white orange black or half black/half white.