When you re serious about your air-removal the Weston Pro-2500 Chamber Vacuum Sealer is the only way to fly. Rather than suck all the air out of a bag and seal it shut this unit removes all the air in the chamber so the pressure inside and outside the bag is the same. This gives you a better seal and it keeps the contents of the bag from squeezing out because of the greater pressure from the outside. It s ideal for sous vide cooking marinating or storing liquids but vacuum sealing is great for almost anything edible. The stainless steel body features a transparent lid over a chamber that uses a 630-watt motor to draw out 29.5 HG of vacuum pressure. The process is quite quick and the digital display indicates your progress. The 3.5-mm thick sealing bars ensure a thick quality barrier that won t let in air. You even have an instant seal function for creating custom bag sizes.