while the open-heel design is anatomically designed to for a comfortable fit

It's a must for Freediving in the lakes

Neue Ballons sollten ebenfalls vor der ersten Verwendung gespült und luftgetrocknet werden

to optimize the reactivity and resistance of the blades

C4 Carbon - EasyQ System weights while the open-heel design isC4 EasyQ System Frenzel Equalization Tool The C4 EasyQ System is a compact equalization training tool for freedivers who want to practise pressure control on dry land. It is designed for focused Frenzel based equalization training, helping you build awareness of tongue position, soft palate control and pressure generation before taking the skill into the water. This is not a Valsalva trainer. In freediving, the goal is not to build a stronger pushing