Bamboo Fibre Bath Sponge This Become the Change bamboo fibre bath sponge cleans deeply, removes impurities and any excess surface sebum, while gently exfoliating and tightening pores. Bamboo fiber is naturally antibacterial making it a perfect eco-friendly alternative compared to other bath sponges. Material: 40% bamboo fibre 60% cotton. Product Dimensions: 170 x 120 x 12mm