Roe sack is essential for me as on the land I shoot its my primary means of recovery for the carcass. Personally I use a classic german canvas sack to minimise weight and noise. As per the others it contains, gralloching gloves, basic first aid kit, head torch, spare stalking gloves and knife + one of the most useful bits of kit to have on hand my buttalo call. Tried the harikla sack once too heavy and covered in lots of straps etc which to me were only useful if you like getting tied up in a hedgerow etc and let the deer know you are there.