The inside and outside of are fabric, which is easy to clean, waterproof and non-absorbent. If it gets wet, it can be dried immediately and put into a backpack or suitcase to take . Colour:Black Material:PU+EVA Size:228mm x 120mm x 58mm Applicable: for OraI-B/Ora Pro 1000 electric toothbrush for OraI-B/Oral Smart 1500 electric toothbrush for OraI-B/Ora Pro 2 2000 electric toothbrush for OraI-B/Ora Pro 3000 electric toothbrush for OraI-B/Ora Pro 3 3500 electric toothbrush Package Contents: 1 x storage box Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.