The Cole-Tac Backbone Frame is the next step in the evolution of support cushions
  
The patented frame eliminates the need to attach the support pad to the gun with straps
  
Connecting is very fast and convenient, either to Picatinny or 38mm/1.5" Arca Rail
  
The frame is attached to the support pad with strong straps
  
The wide, supportive surface of the frame prevents the bag from twisting or moving
  
Dimensions: 17.8 x 7.6 x 2.5 cm
  
Weight: 142g