Lightweight Design: Increases convenience when traveling and comfort and ease of use in the water Durable Construction: Ultra strong 100% Monprene stands up to long-term, heavy-duty use; Power Bars on the underside of the rails prevent over-flex under high load conditions Ultimate Comfort: Barefoot design features a replaceable, adjustable bungee heel strap; Can also be worn with neoprene socks Low Effort Diving: In-water performance delivers speed, power, stability and maneuverability with minimum of effort High Performance: 25 degree pre-angled blade with a Central Power Panel provides rigidity and creates a channeling effect Travels Easily: Fins interlock into one another to create a snug pairing for packing easily in IATA carry-on compliant luggage; Fin sets weigh 1.7 to 3.6 pounds, depending on size