Materials
Silicone, ABS, TPE: which materials?
The material dictates hygiene and compatible lube. Non-porous silicone remains the reasonable default for frequent use.
Silicone
Body-safe if 100% silicone. Compatible with water-based lube; avoid silicone lube (can damage it).
ABS / hard plastic
Often on stimulator shells. Easy to wipe; check the seals if waterproofing is claimed.
TPE / TPR
More porous, often cheaper. OK with a "disposable" mindset; less ideal for intensive shared use.
More