Seemingly simple, the Arc’teryx Ionia men’s t-shirt is designed for a wide range of mountain activities. Made of merino wool combining performance and comfort, this crew-neck style is a go-to for your hiking, trekking or running adventures. For added durability, the construction wraps the wool’s fine-gauge fibres around a nylon core. You can wear it as a primary layer or a standalone. Its merino wool is certified Responsible Wool Standard (RWS) that promotes quality standards for animal welfare and land management.