Granite Gear Pack Pocket Size Chart
  Small Medium Large
Dimensions (in) 10x4x3" 13x4x3" 13x15x3"
Capacity (cubic in) 120 150 225
Product Weight (grams) 57 73 77

These are general guidelines only, sizes are not guaranteed. But no worries, since at SunnySports we offer our exclusive PFF Guaranty