After using various methods/bags/pockets etc for bolting in caves and canyons, we have put all these ideas together to make a specific bag that really is designed for purpose. Not too big, not too small, with velcro and buckle closure, it holds your gear where you need it, inside the bag! This bag doubles as a perfect surveying bag - material options available to suit your needs. We generally use heavy duty materials due to its contents for bolting, but surveyors will be happy with a lighter weight version. Let us know what you want, we will make a bag to suit your job!