What is Reddit's opinion of Kahtoola NANOspikes Footwear Traction - Black XL?
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2 reviews of this product found across Reddit:

Definitely slip-on spikes, https://www.amazon.com/gp/product/B00TOYEBTY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

They work well for walking too, like the other Wed-Thu when everything was a sheet of ice.

One other nice aspect of slip-on spikes is you can remove them and carry them while running. I'll sometimes wear them for the slippery part of the run over to the bike trail, pull them off for the cleared trail, then put them back on for the last leg home.

I run before 7:00am mostly on the Poudre and Spring trails. The trails are almost always plowed before the sun comes up - like this morning, they were already cleared of the snowfall last night.

I'd also recommend getting a set of slip-on traction spikes, like https://www.amazon.com/gp/product/B00TOYEBTY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1. I've never fallen on ice or snow while running in these. They also don't feel awkward on bare concrete for when you reach the plowed bike trails.