Let him loose.

Nothing slows your kid down when he's on his mountain bike—not intimidating drops, not muddy trails, and certainly not bulky, restrictive shorts. The Alpinestars Boys' Vector Short is tough enough to handle his inevitable wipeouts, yet is flexible for riding freedom and comfort. Ergonomic panel construction with strategically placed four-way stretch panels and a rear stretch panel allows easy pedaling, carving, and jumping, while reinforced knees and seat withstand abuse from rugged singletrack and bike park jumps.

  • Tough, flexible short for hard-charging young mountain bikers
  • Ergonomic panel construction allows comfortable mobility
  • Four-way stretch panels enhance riding freedom
  • Reinforced seat and knees withstand abrasion
  • Silicone interior waist finish prevents slipping
  • Side waist adjustments for comfy and secure fit
  • Interior hip pocket stows keys
  • Reviews
  • Q & A
Unanswered Question

How do the boys sizings work?