Nathan Sports BFF Puffer Jacket review: a stylish multitasker fit for a variety of activities – and the bar Lightweight and warm, the Nathan Sports BFF Puffer Jacket is a versatile down-alternative jacket What is PrimaLoft? What is PrimaLoft? Find out exactly what this waterproof, insulated material is doing for you when you’re out exploring in all weather Advnture NewsletterAll the latest inspiration, tips and guides to help you plan your next Advnture!Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors MOST READ1Kathmandu Heli R Hooded Down Jacket review: lighter on the trail, lighter on the planet2Nemo Hornet Osmo Ultralight 3-Person Backpacking Tent review: a beautifully designed shelter3Garmin Instinct 2X Solar hits record low price – who needs Black Friday?4Men try to take close-up photos of grizzly bear and cub – it doesn't end well5Watch wince-inducing footage of a Norwegian man attempting the belly flop – sorry, “death dive” – world record