No need to leave those rollerblades gathering dust all winter long, because now you can attach these Skate Slider short skis to your rollerblade boots. "Snowlerblades" are making a comeback, and this German company is leading the way with these attachments that look like tons o' fun.
Check out the video of rollerbladers showing off their stunts as they ski downhill at high speed:
Wonder if you could attach full-sized skis in the same way? Without bindings, that might be kinda tricky.