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  • Made of stretchy Lycra® spandex, stocking stretches to fit over most road-style handlebars
  • Can be laundered following manufacturer's instructions


View all Sci'Con Bike Covers

REI membership


Best Use Cycling
Material(s) 80% polyemide/20% spandex
Weight 3, 3 ounces
Rated 5 out of 5 by from Keep the front wheel on! This bike bra is terrific. It stretches right over a large road bike without having to remove the front wheel, prior to mounting on a bike rack -- there is sufficient clearance above the front wheel to be able roll the bike in and out of the garage. I believe it is the only one of its kind out there to offer this functionality. Also, nice elastics in place to attach the lower front of the bra to the front forks. Works like a charm on a big bike atop a Thule rack. That said, not sure how waterproof it is, so likely good idea to combine with a waterproof seat cover (or plastic shopping bag) to ensure a dry saddle. Not cheap, but extremely good value and extremely functional. It stops bugs aplenty, too.
Date published: 2011-07-25
Rated 5 out of 5 by from Endured Long Road Trip I drove from Minnesota to Bozeman, MT using this on my road bike thru a lot of buggy interstate highways. The front of my car and trailer were plastered with dead insects as was the Defender, but hardly any insects on the bike frame and just a few on the lower part of the fork.
Date published: 2014-09-26
Rated 5 out of 5 by from Don't travel without this! Took our bikes from Seattle to Yellowstone late spring. My bike, facing forward, had the defender; the other bike would have had to face backward so the defender would not work, obviously, so we put the 2nd bike on the back rack. By the time we arrived in MT that night, the defender was covered with bugs. It saved my handlebars, forks, and seat from bug guts. If you want to carry your bike on top, you need this gem. Now they need to come up with something for backward-facing bikes!
Date published: 2013-06-13
Rated 1 out of 5 by from Poor construction While a great idea, it started coming apart at the seams after only half a dozen uses.
Date published: 2016-07-01
Rated 4 out of 5 by from Simple solution I couldn't find a similar product made for a large mountain bike, so I took a chance on this one. It fits my Stumpjumper 29'er pretty well. The fork protection could be a little better, but it seems pretty good for the price. Its very strechy and covers all of the shifters and brake handles, and covers the saddle as well. Does not protect against rain, but its not a total cover anyway.
Date published: 2011-05-15
Rated 3 out of 5 by from Expect to take a gas mileage hit. It keeps the bugs off. Works with road bike, mountain bike, fat bike, single speed, and tandem. After one season of use, the seams started to tear. But the drop in gas mileage is noticeable, it being on top of the car and all.
Date published: 2016-06-07
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Does this act like a sail on the car, creating wind obstruction?

Asked by: DrawDraw
I've noticed a drop in gas mileage.
Answered by: theGliberal
Date published: 2016-06-08

will this work on a tri bike?

Asked by: Tyguy
The Sci Con Bike Defender​ is designed to be used on road bikes with drop bar handlebars. If your tri bike has aero bars it may not work as designed.
Answered by: REIservice
Date published: 2016-08-12

Can REI get in stock or order the version made for mountain bikes?

Asked by: Rainbow Bright
No, REI does not carry the mountain bike version. We are unable to get this product for our customers.
Answered by: REIservice
Date published: 2015-09-20
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