The Men's Abisko Midsummer Trouser represents a whole new category from Fjallraven. It's a lightweight, well-ventilated pair of trousers designed for trekking in warmer weather. It'll come in handy when the weather forecast is calling for wind when you're planning backpacking trips. Most of this trouser is a very pliant polyester that packs small when it starts to feel like summer again, and Fjallraven's G-1000 Air Stretch paneling provides extra breathability and mobility on the mountains. Air Stretch is a blend of organic cotton and recycled polyester, too.