The Montbell Ultralight Umbrella weighs 128 g, about a third more than the Travel/Trekking Umbrella 50 models that share the same 88 cm canopy diameter. The difference comes from an 8-rib frame instead of the usual six or seven — more ribs mean a more stable shape in gusty conditions, at the cost of extra weight. The canopy uses 10-denier Ballistic Airlight® nylon, a thin yet tear-resistant fabric typical of ultralight gear.
Folded length comes to 26 cm, slightly longer than its lighter siblings but still compact enough for a pack's side pocket. There's no UV coating, so this is strictly rain protection rather than sun shade for hot-weather trekking.
For hikers who want low weight but also value canopy stability in breezier terrain, the 8-rib build is a reasonable compromise between robustness and added grams. Anyone chasing the absolute minimum weight should look instead at Montbell's lighter Travel or Trekking Umbrella 50.