Unique to Shelter Systems' structures are the molded clips at each hub. They are made of an extremely durable plastic. The importance of these components lies in the fact that they grip the film without puncturing it - there are no weak points to tear out in Shelter Systems structures. The tension achieved by the network of hubs and poles keeps the film stretched tight in the wind, preventing tear through wind vibration. We use hook closures.
Zippers are notorious for breaking after a short working life.
This means that when the doors are open, you have complete access for rolling wheeled carts in and out. The CrystalCave comes complete with clips and connectors attached to covering, poles, stakes, and instruction manual. Crystal Caves are by special order only. Be sure to tell us which covering you want. Should any product prove defective we will repair or replace it at no cost to you.