Underdog Apparel

Underdog Athletics "Underpuppy" Baby Infant Onesie

Size: NB
Sizing guide

All Underdogs start somewhere! The Underpuppy infant onesie is a perfect match for the littlest Underdogs in your life. Available for babies from 0- 12m.


  • 90/10 combed ring-spun cotton/polyester
  • Double-needle stitched ribbed binding on lap shoulder neck, shoulders, sleeves and leg openings
  • Innovative three-snap closure
  • Super Soft
  • Machine washable
  • Designed and produced in the City of Brotherly Love


  • Domestic and International shipping rates apply
  • Printed and packaged using recycled materials