
Rocky Mountain
Grid Fleece
Your breathable, quick-drying fleece for the hike in, the next cast, and another lap under your ski shell.
- 200 g/m² midweight grid fleece
- 94% polyester / 6% spandex
- Four-way stretch and comfortable layering
The Steely Zips field guide
The Rocky Mountain Grid Fleece and The Mule both belong outside. The right one comes down to how you move, how you layer, and what the weather has planned.

Your breathable, quick-drying fleece for the hike in, the next cast, and another lap under your ski shell.

Your technical hoodie for cool river mornings, mountain breezes, and days that ask a little more of your outer layer.
The quick comparison
| What matters to you | Rocky Mountain Grid Fleece | The Mule |
|---|---|---|
| Main job | Breathable warmth while moving; a versatile midlayer. | Warmth with a wind-resistant exterior for changing conditions. |
| Fabric & feel | 200 g/m² grid fleece with four-way stretch. | 210 g/m² fabric with a smooth exterior, warm grid fleece interior, and four-way stretch. |
| Wind & moisture | Quick-drying fleece. Add a protective shell when conditions call for it. | Wind-resistant and water-resistant. Add a waterproof shell for sustained rain or wet snow. |
| How to layer | Over a base layer or under a ski or rain shell. | On its own in suitable conditions or under an outer shell. |
| Fit & options | Athletic-relaxed fit; check the product size chart. | Check the product size chart. Also available as a Full-Zip Mule. |
Warmth depends on your activity, the conditions, and the rest of your layers. Neither hoodie replaces a waterproof shell in sustained wet weather.
River. Mountain. Trail.
Reach for the Grid Fleece when the walk in and changing temperatures call for breathable layers. Choose The Mule when you want a wind-resistant exterior for a cool morning on the water.
Start with the Grid Fleece as your breathable midlayer under a ski shell. The Mule is another layering option when you want its smooth exterior and warm grid interior.
Choose the Grid Fleece for active days with plenty of layering changes. Reach for The Mule when cool, breezy conditions make exterior protection a priority.
A few good questions
If breathable warmth and layering are your priorities, start with the Rocky Mountain Grid Fleece. If a wind-resistant, water-resistant exterior is what your day needs, start with The Mule.
No. The Mule is water-resistant, and the Grid Fleece is quick-drying. For sustained rain or wet snow, bring a waterproof outer shell.
Yes. The Full-Zip Mule in Slate Grey has a full-length front zipper for easy layering and adjustable ventilation.
Use the size chart on the specific product page before ordering. The Grid Fleece has an athletic-relaxed fit designed for layering. If you are between sizes or need help planning your layers, get in touch.