Wearwell clean room mat 095 3×5 white 4 mats per case the tacky surface pulls dirt and dust off shoe soles. 30 sheets per mat, 4/case. clean room mats are the everyday solution for common contamination control issues. Sheets of tacky film collect dirt and debris from shoes. Just peel off the sheet when it is full to expose a new sheet. Tear resistant sheets are numbered to indicate when a new mat is needed. disposable mats make it easy to guard against contamination and reduce facility maintenance. Adhesive backing holds mat securely in place.