We'll save your picks there, but items are not reserved.
Ultralight Mid Sock
Sorry, there was an error. Please try again.

On Ultralight Mid Sock

Brand Sizing: US
FREE Shipping & FREE Returns with
  • Mesh knit
  • Compression panels for non-slip effect
  • Flat toe seams
  • Crew socks with ribbed collar
  • Shell: 58% polyamide/38% polyester/4% elastane
  • Wash cold or dry clean
  • Made in Portugal
  • Sizing Conversion:
    S = US 6.5-7.5
    M = US 8-9
    L = US 10-11
    XL = US 11.5-12.5
    XXL = US 13-14
Style #ONRUN30273
Ready for your workout, these short On socks feature lightweight yet resilient fabric and low-key branding.
While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Shopbop assumes no liability for inaccuracies or misstatements about products.

Size Guide

Conversion Guide

Scroll right to view more conversions

We provided the item measurements to help you confidently decide which size to buy. For further assistance, please contact Customer Service.
Back to Top

You Also Might Like

Oops! You've run out of room for more hearts.
Visit Myheart 's to clear out your old favorites and make room for new ones

More from On

Oops! You've run out of room for more hearts.
Visit Myheart 's to clear out your old favorites and make room for new ones


On was founded in Zürich, Switzerland in 2010 with one very big ambition: revolutionize the world of running. Mining the experiences of a former professional athlete and a Swiss engineer (and winning a few renowned ISPO BrandNew awards along the way), On running shoes utilize the latest technology to produce innovative new sneakers with both soft landings and explosive take-offs. From the bestselling On Cloud sneaker to the label’s waterproof, all-weather editions, On shoes are designed for travelers, urban explorers, and athletes alike.