... pvc, it made with environmental silicone, which will make it much softer,safer,comfort! 2.Size:8 × 5.5 ×1cm 3 ... ,Pringting is possible. 4.Features: flexible, fashion,eco-friendly and so on. 5.Material: Silicone+elastic band,it has been approved ... .It is easy to put on and off and will not occupy much space and you can hide it in your pocket ...