Silicone, glass, TPR, and PVC
Compare construction and care requirements before choosing a material.
Compare materials and firmness
Glass is rigid. Silicone can be flexible, solid, or layered. The Avant D8 Ergo has a firmer center and a softer surface, while Sportsheets Ren is described as solid silicone.
Check care by material
Look up the cleaning and lubricant guidance for the exact material and model. For a glass product with a silicone base, the two pieces can have different requirements.