Best for…
- Super soft cushioning
- Road running
- Smooth transitions
Features
- Supreme softness
- Improved fit
- Smooth transitions
- New lightweight upper
| Surface | Track, Road |
| Midsole drop | 10mm |
| Weight | 9.1oz / 258.0g |
Max comfort
Supreme softness
Now featuring nitrogen-infused DNA LOFT v3, super soft cushioning optimized to be light weight, responsive, and durable with plush comfort.
- Innovative nitrogen infusion process lets us fine-tune the softness with careful precision so we never sacrifice weight, durability, or responsiveness.
- Our cushioning technologies all start with DNA because they react to your unique stride.
Give your feet a break
Improved fit
Our plush and breathable engineered air mesh upper offers a secure fit, comfortably holding the foot in place.
Find your flow
Smooth & easy transitions
Redesigned midsole and outsole offer a widened platform for smoother, easier transitions.
Origin stories: the Glycerin
The story of the Glycerin begins in the late 1990s — the name was actually inspired by the song “Glycerine” by the English band Bush. From early HydroFlow, to our newest nitrogen-infused DNA LOFT v3, the Glycerin always features our most innovative cushion tech.
The newest version gives runners ultimate softness underfoot in every stride thanks to the specialized nitrogen-infusion process used to create DNA LOFT v3. As we continue to grow options through support and fit, we see the Glycerin line continuing to be a favorite among runners.
![Ronstan Series 50 All Purpose Block - Single Stand Up [RF51140]](https://www.perfspr.shop/image/ronstan-series-50-all-purpose-block-single-stand-up-rf51140_Ukg0lO_300x.webp "Ronstan Series 50 All Purpose Block - Single Stand Up [RF51140]")
