- Which is warmer, the Simond MT100 or the Rab Microlight Alpine?
- On paper the Simond has the higher fill power at 800 versus 700, but the Rab carries 5.3 oz of down and a longer 29-inch back. The Simond is rated for 41°F to 23°F; the Rab is built for similar three-season alpine use with better wet-weather performance.
- Is the Rab Microlight Alpine worth the extra money over the Simond?
- Only if you need the hydrophobic down, tougher Pertex shell and pack-away hood. At $221.25 versus $60.00 as of November 4, 2026, the Simond wins on warmth per dollar for casual hiking and town use.
- Which one handles rain better?
- The Rab. Its down has a Grangers hydrophobic treatment, so it keeps loft when damp, and the Pertex Quantum shell blocks wind and light precipitation. The Simond's down is untreated and only the shell is water-repellent.
- Which is lighter to carry backpacking?
- The Simond at about 320 g in size L versus 456 g for the Rab. The Simond also stuffs into its left hand pocket, which saves bringing a separate stuff sack.
- How do the fits compare?
- The Simond is described as true to size, but Decathlon recommends sizing up for one base layer and two sizes up for more. The Rab has a regular fit that runs trim, so check chest and sleeve length if you layer a fleece.
- Does either jacket have a chest pocket?
- Only the Rab, which has one zippered chest pocket plus two zippered hand pockets. The Simond has just two zippered hand pockets.
