Nike Effortless Training Bag Review Liquidathor Gym Totes and bags September 20, 2018November 7, 2018Clothing, Gym Bags, Luggage & Travel Gear, NIKE, Shoes & Jewelry 0 Comment polyester With its soft, yet durable polyester build, the Women’s Nike Effortless Training Bag is the go-to bag for all your gear. The interior features zippered storage for valuables and a drop-in pocket that secures a water bottle.