Made of durable acrylic, these convenient embryo collection cages feauture an extended end cap (flexible LDPE) which accomodates a petri dish. This unique easy-to-use feature eliminates the need for tape, while maintaining cage integrity. Stainless steel mesh (97µm) is fused to the top of the cage to allow ample breathability and eliminate condensation. Do not clean with ethanol, this will damage the acrylic.