SoftScience has taken the super-popular Fin 2.0 and added a twist. Now with a 4-eye shoe lacing system, the Fin 3.0 gives you an even more customized relaxed and roomy fit. If you like the feeling of a more secure heel, then the Soft Science Fin 3.0 Shoe is for you. The non-marking Fin 3.0 also has reinforced areas at the toe, forefoot, and ankle for awesome stability in hairy situations.