Showing posts with label Wavespring Technology. Show all posts
Showing posts with label Wavespring Technology. Show all posts

Tuesday, December 25, 2012

Change of pace on an Xmas morning run

Shoe of the day
Today's run (street): 4.7 miles

Today is Christmas day and the neighborhood was quiet in the morning. We had sleet and snow overnight and the streets were shiny from the rain. I'd originally planned to go to Stillwell Woods but I didn't feel like dealing with wet rocks and muddy trails. I figured that most people would be hanging out at home and I'd have the streets mostly to myself.

It had been a couple of days since I last ran and I hoped that the break would be energizing. Just to mix it up, I selected my Spira Stinger XLT's that I've neglected for months. I dressed for the 37° weather, stepped outside and observed that the clouds had given way to sun. While my Garmin searched for a signal, I saw a familiar runner passing on the street to my left. I wanted to follow him, but the GPS was being a little too poky. A minute later I was ready to go.

The Spiras were a nice change from the Kinvaras. I love the fit and comfort of the Sauconys, but the Spiras, almost as comfortable, return a little more energy. The one criticism I have of the Stingers is that the "Wavesprings" are noticeable underfoot. I recall feeling them during the half marathon training runs that I was doing earlier in the year. These shoes are great for shorter runs, but I wouldn't want to cover more than ten miles in them.

Like last Saturday, I was able to sustain a good level of energy throughout today's run. I only intended to run 4 miles but I got caught up in the experience and extended my route. I don't know how much credit I should give to the Spiras, but I covered my distance a minute faster than I thought I would. As much as I downplay performance, it's always fun to beat expectations.

I hope to get to Stillwell or another park at some point this week. Today the streets of my neighborhood were just what I needed to get back to into my running routine. Happy holidays to all.

Tuesday, March 13, 2012

First impression: Spira Stinger XLT's

Float like a bee?
Today's run (treadmill): 25 minutes

Yesterday I posted about two pairs of mystery shoes and last night I got to try on the first pair. They are lightweight running shoes from a company called Spira, based in El Paso, TX. Spira shoes contain something called "Wavespring Technology" where specially designed springs are embedded within the mid-sole to enable better energy return to runners and walkers.

The shoes I received are Spira's performance model, called Stinger XLT. I think they are called Stingers because (with their bright yellow and black highlights) the shoes resemble a bumble bee. I don't judge shoes on the way they look, but people who like their running shoes to be noticeable will not be disappointed.

I took the XLT's out of the box and had two reactions. First was, "That looks like a lot of shoe, I'll bet they're heavy." After picking them up I thought, "How can a shoe containing metal springs be this light?" I put one on my foot and was pleased with the comfortable foot bed. It's a well cushioned shoe and while I usually prefer the other end of the spectrum (Saucony Hattori's), I appreciated the comfortable fit.

I'd asked for size 11's, 1/2 size up from what I usually wear, because lately I've had issues with tight toe-boxes. The XLT's fit me well and the toe-box was fine. A quick run around the house reinforced that, lots of room, but no slippage. I checked the morning's weather and it said rain, so I decided to try my first run on the treadmill.

After two relatively long runs over the weekend, my feet were a little sore and the XLT's provided a nice cushioned base. The Wavesprings do not create a "moon-bounce" effect. In fact, it would not be obvious to someone that this shoe contained any special technology. The XLT's do provide a decent response though, not unlike my Brooks GTS 10's in their early days.

The shoes performed very well on the treadmill. They moved naturally with my foot, felt stable and returned good energy. I couldn't test the predicted 15 sec/mile improvement communicated to me by Andrew B. Krafsur, Spira's founder, but I found it surprisingly easy to maintain a sub 9:00/mile pace once I got going.

I'm planning to try the shoes on the road tomorrow morning. If they perform well I'll use them for at least one of my long runs this weekend. My most popular post is titled "Tubes, zig-zags, bounces, shocks and resistors" which is about gimmicky running shoes that fall short of expectations. So far (and surprisingly), the Stinger XLT's appear to be the real deal.
 

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