Create healthy homemade treats for your mutts with these flexible silicone treat makers. Designed to bake or freeze! Features: 12 perfect sized bones per tray with 1 ounce fill line. The bone’s notched mid-section allows for the perfect break… for a ½ ounce treat. Trays nest for easy storage…and stack, just turn one 90 degrees! Microwave, dishwasher, freezer, and oven safe up to 446°F/230°C. FDA approved food grade silicone. BPA free. PVC free. Odor and stain resistant.