Thanks to mounting system SkyDrop variometer can be easily mounted to the riser. System contains plastic holder, Velcro and two straps. It is designed for safety and maximal comfort during flight. One piece is included accessorize with SkyDrop vario. 

Instructions for use: Place one velcro peace on the back side od SkyDrop. Another velcro piece place on plastic holder. Take two straps and grip plastic holder to your riser (straps will fit into narrow part at both ends). When you grip holder with two straps cut off what left from straps. At the and just adhere SkyDrop to holder.