Leather is very sturdy when you maintain it properly, so It is good price for cash, but it isn't great for training - and certainly not suited to swimming. It's important to select the correct size when paying for an Apple Watch band to ensure a comfortable and comfy healthy. https://allhealthmarket.com/product/aeahmarket/appleband/business-real-leather-loop/leather-strap-for-apple-watch-band-serie-1-9-and-38-49mm-with-bracelet/