This unique silicone training ring features a rounded wing that holds up to three small weights. Each grooved hole supports a 56 gram removeable steel ball that locks securely into place for any play time activities. Stretchy and comfortable. it's a simple design that snugly supports and fortifies. with incremental increases up to 170 grams in total. Submersible in water & easy to clean.- Silicone weighted training ring- Three 56 gram removable weights- Grooved holes hold weights securely- Comfortable. stretchy ring- Made from creamy smooth silicone- Weights made from steel- Height: 7.7 cm. Depth: 3.5 cm. Width: 5.2 cm- Waterproof & submersible- Phthalate & latex free