Legere synthetic reeds are rugged and should last for many hours of playing. Its properties are very similar to those of wet cane. It doesn't have to be preconditioned before playing. Impermeable to water. Completely non-toxic. Can be sanitized. It is extremely tough and it will last a long, long time.
I love these reeds. They respond consistently and with an astonishing similarity to cane. They will start to play softer after 40-60 minutes of constant play, at which point they need to be set aside and rested. The next day, they will respond and sound with the original strength. They continue the ability to firm up to normal until from 3-6 months, after which you should switch to a new reed. These are superior in many ways to the cane reeds and cost effective if youre not willing to play the worst of the cane reeds - I play on them exclusively for alto saxophone, tenor saxophone, clarinet and bass clarinet. Note that the Quebec clarinet cut is the best but also does not last nearly as long as the saxophone reeds. Perhaps 1 or 2 months. I use the tenor sax studio cut for my bass clarinet - sounds much better than the actual bass clarinet Legere reeds. My one complaint is that they do not produce reeds stronger than 3.5. I need stronger for one of my bass clarinet mouthpieces.