General description Silicone Case Bags designed for the Prime 250W Power Bank, featuring heat dissipation holes on the sides and bottom, along with internal ventilation gaps. This case allows for the installation of two 4cm cooling fans at the back (fans need to be purchased separately). Technical specifications Material: Silicone Color: White Measurement allowed error: +/- 1-3cm Other information Package Contents: 1 * Silicone Case Bags (cooling fan not included) Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.