Just like the other reviewer mentioned, this place has everything you need for a fun day of rafting down the river - rafts, life jackets, tubes, etc.
You would think that since rafting down the Bow is one of my favourite things to do in Calgary, that I would own a raft by now... but nope, I rent. On one particular weekend I had called Lazy Day to reserve a raft, but they had filled all their reservations for the next day. I was advised to show up early in the morning to line up for their first-come-first-serve rafts that they don't designate for reservations. So, we showed up about 15 minutes before they opened and ended up being the first in line - success! We only had to wait about a half hour for them to clean/test the raft and we were on our way!
Even though we couldn't reserve on that one weekend, I was still pleased with the service and how the guys were still super friendly on what seemed to be a ridiculously busy day (it was great weather and I believe there was a floating event going on). Prices are also pretty on par with the U of C rentals service, but it seems that they only have the 4 person rafts available which is fine for small groups. Definitely worth checking out if this location is closer to you. See you on the river!