Review on UltrAspire 550 Race Handheld Blue/Gray, Universal Size by Alec Winsor

I like the design where I don't squeeze this bottle during the race like I would in a marathon. Plus, the solid bottle makes it easy to refill electrolytes with power - it's free standing as long as you open the tailwind pack. Very comfortable to hold. Easy to clean. I wish there was a pouch/pocket for storing electrolytes/saline pills [allows for easy access]. I will continue to use this bottle for non-marathon races.