Merino wool, traditionally for winter, proves ideal for summer running. Its thin, soft fibers keep runners comfortable in heat. Smartwool’s blend with Lyocell enhances breathability and moisture-wicking.

Merino wool’s natural odor resistance limits bacteria buildup, keeping clothes fresher. Its moisture absorption reduces chafing and keeps skin dry. Smartwool’s Indestructawool technology boosts durability in high-wear areas. Read more culture coverage.

Smartwool’s merino socks and shorts remain breathable and comfortable in warm weather. Runners find merino wool softer and less itchy than traditional wool, making it a summer staple. Related: Joe Wicks Boosts Peterborough parkrun Attendance to Record High.

This original Runner World brief is based on reporting from Canadian Running. Visit the source for its complete reporting, context and any later corrections.