Shown here in Double Bell tip design BLUE N BLACK is medium dencity silicone with black and metalic blue heat sensitive stripes. Black turns to white with body heat.
 
 
Every PUBLICPARTS dildo is hand crafted from an original design and hand poured using medical grade platinum silicone which is body safe, non porous, stain resistant & incredibly durable. Platinum based silicone is FDA approved and is a much more expensive material than cheaper alternatives such as TPE or PVC.
 
This is a designer one of product.