Designed and purpose-built to perfectly fit their BTX eyepiece module, the Swarovski Optik Stay-On Case protects the module while providing full access to the focus, diopter, and interpupillary adjustments. The water-resistant Cordura nylon exterior matches the green and black color of the scope body, and it has interior padding for additional protection. Snap fasteners and a wrap-around zipper provide fast and easy access to the eyepieces and forehead rest.
the flap doesn't stay closed with current mechanism. a better closure system with a snap or zipper would improve this product
I have SOCs for another eyepiece and two objectives. The Swarovski SOCs are well made and fit perfectly. The BTX SOC is no exception. For field use the SOC provides a bit of security. There is one problem with the BTX SOC. The case is of course wedge shaped to fit the binocular eyepiece. Thus, the case can slide down the assembly toward the objective lens and cover the focus ring. The weight of the back flap can cause the sliding. When putting a shoulder strap over your shoulder, if the BTX case attachment points are pulled away from the objective, all if fine. If they are pulled toward the objective, the case will try to slide down to the objective. Having the eyepiece flap secured over the eyepieces solves the problem most of the time. In summary, I don't take the BTX in the field without the SOC, and I'm glad I have it.