Crafted from , unbleached sea sponge material, this sponge is designed to maintain optimal humidity levels in reptile or crab tanks. Its round and compact design ensures easy placement in water dishes or tank corners, providing a reliable solution for creating a comfortable and hydrated environment for your reptiles. Features -Color:Yellow -Material:Sponge -Size:5.80X5.80X0.10cm/2.28X2.28X0.04in - moisture retention: designed to maintain optimal humidity levels in crab tanks, these sponges prevent dryness inside shells, ensuring a healthy and comfortable environment for your reptiles -Easy cleaning and replacement: these sponges are simple to clean and replace, reducing maintenance efforts while promoting a nice habitat for your crabs -Versatile compatibility: suitable for various crab tank setups, these sponges enhance the conditions of your reptiles, encouraging their activity and overall wellbeing -Innovative material design: crafted with a unique material that locks in moisture while allowing airflow, these sponges prevent excessive dampness and maintain a balanced habitat -Habitat simulation: mimics humidity environments to support crab health and growth, helping you create a sustainable and thriving ecosystem in your tank Package list: 20 x Crab Sponge