Rib Knit Tank Top Old Navy Todos Tank Top in Rib Knit Rib Knit Seamless Tank Top Old Navy o kiu Ribbed Tank Top LIB 6583 LIB Ribbed Tank Old Navy Rib Knit Tank Top Old Navy. The Todos Tank is your everyday essential with a flattering, supportive fit. Made from 100% certified organic cotton in a 4x1 ribbed knit, it hugs in all the right places and holds its shape wear after wear. Biodegradable buttons made from casein and plant protein add a thoughtful touch to this consciously crafted staple. Wear it tucked, layered, or on its own, this one does it all. Fit: Model is wearing size S. Fitted, 4x1 gauge ribbed knit. Material: 100% Certified Organic Cotton. Biodegradable Buttons made from casein and plant protein Care: Machine wash cold with like color. Tumble dry low. Do not bleach. Cool ironing. Origin: Made in Los Angeles, CA