Quick release, easily attach snorkel strap Diameter (Outer Dia. x Inner Dia.): Approx. 3.6 x 2.5 cm/ 1.4 x 1 inch Double loop style snorkel keeper can be adapted to virtually any snorkel if needed, also can be used as octopus holder Size (Overall Length x Thickness): Approx. 9.8 x 0.3 cm/ 3.86 x 0.1 inch but functional snorkel keeper, made of soft silicone material, and durable : - but functional snorkel keeper, made of soft silicone material, and durable - Double loop style snorkel keeper can be adapted to virtually any snorkel if needed, also can be used as octopus holder - Quick release, easily attach snorkel strap - Size (Overall Length x Thickness): Approx. 9.8 x 0.3 cm/ 3.86 x 0.1 inch - Diameter (Outer Dia. x Inner Dia.): Approx. 3.6 x 2.5 cm/ 1.4 x 1 inch Package Includes: 2 Pieces Snorkel Keeper : Due to the differences between different monitors, the picture may not reflect the actual color. There is 2-3% difference according to manual measurement, please check the size carefully before you buy the item.