The waterproof Smartphone-Drybag fits on every PRO tank bag. The holder’s plastic cover with its large clear PVC window and inner dimension of 160 x 80 mm is suitable for almost all common smartphones up to 6.5 inchesThe smartphone is attached to the tank bag via the T-Lock mount. You can adjust the position of the T-Lock holder on the MOLLE attachment to suit your needs. You can find detailed information on how to attach the T-Lock to the MOLLE attachment in the operating instructions. Once attached to the T-Lock holder, the smartphone Drybag can be released with a quarter turn if required. This way the device can be removed in just one step.