Add the 3+ to the pocket t's. Not just for a phone, cigarettes, or pocket-protectors (intended for Guywhofishes), but also for reading glasses for us vision challenged chaps that need something to help tie knots or look down the throats of fish at our snell hooks!
I buy el-cheapo polarized sunglasses with the +1.75 reader lens at the bottom because there's no where else to keep a pair of readers at the ready on the boat. The pocket t-shirt would surely be a summer ticket for those of us over 50.... not that I'm admitting to being over 50, of course.