They add a light protective layer between your foot and the fin without significantly changing the fit

arch support

comfortable and efficient carbon fin for freedivers who want reliable performance across pool training

70 cm outer diameter with approx

Lenses:  20mm PCX

Uba Project B-Happy Bubble Stopper box They add a light protectiveB Happy Bubble B Happy Bubble is a solid and reliable stopper, made of bioplastic, which replaces the classic tennis ball on the freediving training lines. Placed just before the bottom plate, where one usually makes a turn, it prevents the lanyard from getting stuck. Happy Bubble greatly enhances your safety, leaving room for more concentration on your dive. How it works B Happy Bubble is composed by two hollow non deformable hemispheres connect by a