Yes, wooden butt plugs but splinters will NOT be an issue. Each butt plug is finished with 20 coats of acrylic to seal in the wood and keep everything else out. They're super smooth and safe for use with any lube. While we don't recommend boiling them or putting them in the dishwasher to sterilize, you can use soap and water to clean it after you play. And no, you won't get a splinter.