Hey folks, jumping in here as a UK hiker who’s logged plenty of three-season backpacking miles in the Lakes and Scotland-welcome aboard, newbie! Those Mountain Equipment sales are tempting right now (I’ve snagged a few bargains myself), but let’s break this down without the fluff.
First off, quick model clarification to avoid confusion: the Redline is a proper down jacket (typically 700-800 fill power hydrophobic goose down in their belay/midlayer versions), super warm and packable. The Cirrus Pull-On, though? That’s synthetic insulation (Thermic Pro fibres mimicking down), not actual down-great callout if you’re eyeing both, as it changes things for damp UK conditions.
Down fill power (700 vs 900): It’s a solid deal, but not make-or-break for beginner backpacking in chilly UK weather (think 0-8°C nights, damp trails). Fill power rates how much loft/insulation you get per gram of down-higher number = more warmth and compression per weight, but diminishing returns past 800 for most folks. A 700-fill jacket (like some Redline variants) will keep you toasty under a shell on most trips, weighs 300-400g, and packs tiny. 900-fill (e.g., their Lightline or premium Redlines) is 10-20% warmer/lighter for the same bulk, but costs more and needs careful water-proofing (hydrophobic down helps, but UK drizzle laughs at it). For starters, skip the 900 unless you’re gram-counting or pushing winter-700 does 90% of the job cheaper.
Layering under a shell without bulk: Both shine here, but I’d lean Redline (down version) for pure minimalism-its high drape and stretchy Pertex shell slide perfectly under a Gore-Tex hardshell like the ME Makalu, adding 1cm loft max when zipped. Packs to grapefruit size. Cirrus Pull-On edges it for wet-weather reliability (synthetic doesn’t clump when damp) and is similarly slim (350g), with a helmet-compatible hood option. Avoid puffier belay styles if pack space is tight; go pull-on for speed. Pro tip: Pair with a lightweight base (merino) and mid (fleece grid if variable temps)-total system stays under 600g insulation.
Sales legit? Mostly yes if from UK staples like Cotswold Outdoor, Go Outdoors, Snow+Rock, or ME’s own outlet-prices dipping to £100-150 on last-season stock is normal (check clearance sections). Sketchy Amazon/eBay sellers or “crazy low” overseas sites? Red flags for fakes-look for stitched logos, down loft test (shake it, real down puffs evenly), and serial tags. I’ve bought fakes by accident before; they lose loft fast. Stick to authorised dealers and use PayPal for buyer protection.
TL;DR for you: Grab a 700-fill Redline on sale for versatile layering if it’s dryish trips; Cirrus if you’re paranoid about rain (smarter for UK newbies TBH). Either beats a bulky fleece. Hit up ME’s site for specs, and test fit in-store if poss-what’s your target temps/pack weight? Cheers! 🚀