Sometimes the picnic in Central Park evolves into drinks in Bushwick, which then becomes a guilt-ridden trip to the gym (that lasts all of 20 minutes). Enter our convertible backpacks. Care of their nifty removable straps, they go from carryall to crossbody to top-handle and fanny pack with yogic agility (yes, they’re that good). Just a few strap adjustments and you are in business. So, without any further ado, please allow us to school you in art of the convertible backpack.