Review on 👙 Kanu Surf Women's Long Sleeve Rashguard - Women's Swimsuit & Cover Ups Apparel by Vincent Bain

This t-shirt makes me feel good both on the beach and in the pool. Fits well over my one piece. The average height fits me - 5ft 5in - 135lbs. My only question is that it should be 50 SPF and I still always tan underneath. I usually only go in the water for an hour so I'm wondering if the fabric offers as much protection as it should? While I never get burned, which is good, I expected not to get sunburned where my shirt covered me. I've worn the short sleeved version for years and don't recall this happening.