What Our Gearhead(R) Experts Are Saying:"For fast-moving alpine missions, this jacket's warmth-to-weight ratio is unmatched. It disappears in your pack but comes through big when the temps drop."Designed for high-alpine pursuits where every gram matters, the La Sportiva Lumina 300 Down Jacket delivers elite warmth in a minimalist package. With 175g of 1000-fill Italian white down-making up half of the jacket's total weight-it offers powerful thermal insulation without bulk. Pertex(R) Quantum Diamond Fuse fabric brings abrasion resistance to tough ascents, while the included repair patch and stuff sack extend the jacket's backcountry lifespan. Strategic down chambering and inner elastic cuffs keep heat in when you stop to belay or summit. Harness-compatible pockets, an adjustable hood, and an efficient fit make the Lumina 300 a technical layer built for your most demanding objectives.