These bags are absolutely massive!!! The A4 size is probably the largest bag on the market and can hold almost 2kg of feed! They have been used to great effect by anglers wishing to apply a concentrated area of bait from a boat. Popular with both carp and catfish anglers alike they have been used with great success on lakes and rivers throughout Europe. The bags are made from our DOUBLE THICKNESS material giving them a thickness of 80 microns. They have a dissolve rate of 45 to 120 seconds dependant on time of year, ensuring a sensible dissolve rate and can be used with confidence in depths of up to 50 feet.