After several hundred metres of steep and sweaty walking you arrive at the summit. There's a stiff breeze blowing, so you pull your OPOURI PEAK JACKET out of your pack. This lightweight jacket is insulated and windproof. Exactly what you need when you're moving fast in the mountains.The jacket is filled with our environmentally friendly synthetic fibre insulation, which provides a basic level of warmth. This is teamed with a windproof shell fabric which boosts the thermal performance. The jacket is so light and packable that it will fit in your waist pack, and it comes with a handy little pack bag. The flex inserts at the sides are a handy feature for more athletic activities.The OPOURI PEAK JACKET also makes a great back-up jacket for rest breaks. And in wet weather, you can wear it under your hardshell.