The cold weather is enough; don't let your gear slow you down, too. The Merrell Inertia Insulated Vest 2.0 has the lightweight, packable performance you need to keep you warm at a moment's notice when chilly temperatures strike on the trail. ; Regular Fit. ; M Select SHIELD shell: • Smooth, woven poly shell moves easily against baselayers and top layers. • Ripstop design offerrs durable, lasting wear. • DWR (durable water repellent) fabrication offers water-resistant protection. • Contoured quilting improves natural mobility. ; PrimaLoft Silver Eco insulation: • High warmth-to-weight ratio retains heat without adding unwanted bulk. • Breathable design allows passage of moisture vapor from perspiration. • Lightweight and compressible for easy packing. • High-loft design offers a classic puffer look without reducing durability. • 133g weight. ; Highly compressible design backs into the inner zip pocket. ; Stand collar with zipper garage. ; Full-length zip with inner draft flap. ; Sleeveless. ; Zip hand pockets. ; Curved hemline. ; Body: 100% polyester; Insulation: 100% polyester; Lining: 100% polyester. ; Machine wash and tumble dry. ; Imported. Measurements: ; Length: 25 in ; Product measurements were taken using size XS (Women's 0-2). measurements may vary by size.