Power Trip. Ultimate power with every kick. A new high-performance Atomic Aquatics fin at a moderate price. Atomic X1 Fins have a flexible blade designed for ease and efficiency of kicking.” Atomic Aquatics Blade Fins are designed for power and speed” with a moderately firm blade. New X1 Blade Fins are designed with a firmer blade for ultimate power” general purpose diving, tech diving, extreme applications and alternate kicking styles. Fins are a composite design using durable rubber and plastic materials. This open heel non-vented fin design has adjustable heel straps with large strap pull tab for easy donning and doffing. The strap buckles come with squeeze-style” side release buckles. Fins are available in multiple sizes and colors.