This is a storage container made to allow you to marinate vegetables, meat, chicken or fish in just a few minutes. A pump is included to extract all the air out allowing the meat to absorb the marinade in much less time. The marinater will allow you to tenderize meat for your grill so quickly that you will be able to have dinner directly after work. This is a great gift for the grillmaster in your house. Set includes a 2.5L polycarbonate container and a vacuum pump.