. In addition the silicone mouthpiece is safe and comfortable to wear it fits perfectly to your mouth without any odor. *Flexible & Adjustable Swim Fins: Made from advanced TPR and PP the fins are flexible and durable with wide blades which can maximize the power of every kick with minimal effort.5 *Dry Top Diving Snorkel For Free Breathing: Designed with a dry-top valve and a lower purge valve this dry top snorkel is able to keep water from entering the breathing tube and ensures unobstructed breathing while diving underwater.