Upspirit 4PCS Reusable Silicone Food Wrappers Eco-friendly Silicone Food Fresh-Keeping Preservative Film 100% Brand new 4PCS Reusable Silicone Food Wrappers. Adapt 100% food grade silicone material, non-toxic, odourless, harmless to our body. Soft silicone material, reusable, environmental friendly, easy to use and clean. High degree of flexibility, can be washed and disinfected in boiled water.Do not use in the oven. An essential home kitchen tool to keep your food fresh.