streak of 855 days including my 100 mile ultra marathon and it has held up well. It has a pocket big enough to hold my Samsung Galaxy 4 smart phone and other items so I was really looking forward to trying the Endurance series that looks to be designed for runners. Right out of the box it looks to be very well made offering a wider strap than the original version along with a place to attach your race bib and a place to hold 6 gel's which is more than enough for me during a marathon. The pocket can hold your phone, keys, credit cards, a wallet, or anything else you might want to store in it.
The SPIbelt Endurance Series belt has a few features that I think make it better than the original model for runners, including:
|Top is the original SPIbelt. Bottom is the Endurance version.|
- A water-resistant lined pocket
- A wider elastic belt
- Holsters for energy gels
- Adjustable race bib toggles