Skullerz 8953 Hard Shell Bump Cap Sweatband Replacement (10-pack) easily and securely attaches to Skullerz 8951 and 8952 Bump Caps for padded and breathable comfort on the job. This bump cap sweatband quickly attaches to the suspension headband of Ergodyne Hard Shell Bump Caps, using a series of holes that connect to integrated hooks of the suspension system.