- Signature Series at The Ultramarathon Running Store
AK Race Vest (Anton Krupicka Race Vest)
Designed by Anton Krupicka, the AK Race Vest brings minimalism to the world of hydration. Even though it weighs in at only 6 ounces (10 with bottles), the UD AK Race Vest still has plenty of capacity for food, clothing, and a phone, so you can use this vest for anything from 10 to 100 miles.
“The Race Vest is super light and minimal – but easily carries everything I need.” (Anton Krupicka)
SJ Ultra Vest (Scott Jurek Ultra Vest)
The SJ Ultra Vest is the result of collaboration with Scott Jurek, the world’s most dominant ultra runner. Weighing in at 7.5 ounces (11.5 with bottles) and offering 9.2 L of storage space, the UD SJ Ultra Vest has the best weight-to-capacity ratio of any hydration pack on the market.
“I’ve been using Ultimate Direction packs for years, modifying them to carry bottles in front – the Ultra Vest is the culmination.” (Scott Jurek)
PB Adventure Vest (Peter Bakwin Adventure Vest)
Peter Bakwin wanted a pack that could do anything from running to hiking, climbing to skiing. Featuring 12 L of volume and a variety of features, The UD Adventure Vest allows you to stay hydrated and comfortable on any size adventure from quick outings to all-day expeditions.
“The Adventure Vest is the pack I’ve always wanted but wasn’t available – until now!” (Peter Bakwin)