Artificial human augmentation has to start somewhere, so the thumb must be as good a place as any. The Third Thumb comes from the mind of Dani Clode, who designed it to be one of the first prosthesics for non-amputees. Kind of how tons of video games feature ways to change or strengthen your body, regardless of how many of your original limbs you still have. The Third Thumb is meant to remind people of the original meaning of prothesis, which was something that extended or built upon, rather than replaced. In that, the Thumb succeeds, because it’s something that you strap onto the other side of your hand to give one of your hands two thumbs. So don’t let the fact that the Thumb doesn’t actually add a whole lot to hand functionality stop you. It’s not supposed to. It’s just supposed to reframe how we think about artificial body parts and remind us that human augmentation isn’t something relegated to gaming.
More Gear

Upgrade Your Golf Game With the SQ Putter
Whether you’re an amateur golfer or a seasoned pro, the SQ Putter will improve your short game.

Black Book: 13 Products Our Editors Loved in March 2025
These are the best things we tested this month—from a cast iron pan to a memory-foam mattress.

All the Gear You Need to Start Climbing Indoors
There’s always a bit of a learning curve when you take on a new hobby. But with these five essentials, you’ll be reaching greater heights in no time.