Food Storage Bulk Food Storage, Home & Kitchen, Kitchen & Dining, Progressive International, Storage & Organization Prepworks by Progressive Produce ProKeeper, Variety Pack(1-Large, 1-Medium, 2-Small) Review by CheerfulJackal February 26, 2019 No Comments Size:Produce – Variety Prepworks Progressive Prokeeper keeps produce fresh for up to twice as long with Air-flow vent system. 4-piece set includes: 1 large, 1 medium and 2 berry sized containers.