This is a classic crew-neck undershirt. If you wear your shirt buttoned to the top this is the right style for you.
The fabric is 95% bamboo viscose mixed with 5% elastane for a super-smooth, lightweight material which moves with you. You'll hardly notice you're wearing it. The body is long, so it stays tucked all day.
Buy 3+ and save 10% - use code BUY3
Buy 5+ and save 20% - use code BUY5
Apply the discount code at the checkout page
If in doubt, size down. Undershirts should be worn as a close fit.