These are the most comfortable travel shoes in the world! A boat shoe and sneaker all in one, and made from sustainable materials. Naturally breathable, moisture-wicking and cool to the touch, this lightweight shoe is nautically inspired and made from renewable eucalyptus-tree fibers that also feel silky smooth against your skin. The style is made with an odor-resistant merino wool footbed, and the sole features lightweight low-density foam cushioning (made from castor beans for a lower carbon output than traditional foams) that helps with friction control. The S-curve tread array mimics the anatomical flexibility of your foot for natural weight distribution. Product Features Lace-up style; laces are made from post-consumer recycled polyester and are anchored by bio-based TPU eyelets 17.5 micron superfine New Zealand merino wool insole is non-irritating and offers temperature-regulating and moisture-wicking properties Removable insole Textile upper/textile and merino wool lining/synthetic sole For half sizes we recommend going up a size