I usually have problems with nickel and some allergies to metals, but this bracelet is really hypoallergenic! I've worn it to work and the gym (usually sweat causes metal allergies on the skin) and I've had no problems. I have a silver 8mm length 7.5. Personally much better. I love how clean and beautiful it looks. If you have nickel allergy issues like me, this will work great and look great! So happy with this purchase!