Great idea - this little rifle rest simply straps onto the knee. Made using strong 600denier cordura printed with English Oak CamoFoam filling. Fully adjustable quick release strapEnglish Oak Camo "English Oak Camo is our original pattern developed to cover the UK's long Autumn / Winter period. At this time, our countryside starts to turn from lush green steadily to light green and then into browns, remaining this way until Spring. English Oak Camo is made up predominately of browns and even includes acorns. As evergreens are constantly present in our countryside this design includes some green to ensure you blend into all of your surrounding , even when the cover is sparse." Jack Pyke