The Smartwool Midweight Wool Long Underwear Bottoms are made of 100% super-fine merino wool to help maintain your comfort whether the climate is warm, cold or in-between Bottoms feature a covered elastic waistband to prevent chafing and a traditional fly design Flatlock side-seam construction prevents chafing Smartwool® is guaranteed not to itch and can be repeatedly washed and dried without shrinking condition: In good condition, minimal wear. Some light pilling near crotch. See pics. All items are pre-loved and will show minor signs of natural wear.