Boot increases drop spec of device from "4 ft. to tile over concrete @ room termperature" to "4 ft. to concrete across device's operating temperature range". Not compatible with TC20K (keyboard) device. Also not compatible with Power Pack Battery or RFD2000 RFID Sled. Devices with boot attached can be used with Single Slot Charge-Only ShareCradle (CRD-TC2X-BS1CO-02) or 5-Slot Charge-Only ShareCradle (CRDTC2X-SE5CO-02). NOTE: This is a custom product. Please work with your Zebra representative to open a Custom Product Request (CPR) if you would like to order this item.