Loon(TM) - Silicone Caddy The next generation of caddies to keep your gel floatants close at hand.Heavy-duty, lightweight, indestructible and designed to fit all of our 1/2 oz. bottles (Aquel, Lochsa and Royal Gel), the Silicone 1/2 oz. Caddy securely fastens to any pack, bag or vest using a stainless steel tool tether, keeping your floatant right where you need it.