Lumbar pack for hiking, biking and demanding trails
The Sierra Designs Flex Lumbar is more than a waist pack – it’s a technical alternative to a small backpack.
Its expandable capacity (3–6 L or 7–10 L) adapts to every adventure — from hiking and trail riding to fast-paced bike tours.
With compression straps, a padded hipbelt and dual bottle holders, your essentials stay balanced and secure even on demanding terrain.
✅ Expandable capacity (3–6 L / 7–10 L) – adjust to route and load
✅ Compression straps & HDPE frame – stable, body-hugging fit at speed
✅ Dual mesh bottle pockets for hydration and nutrition
✅ Ventilated, padded waist belt adjustable from 20–51 in (50–130 cm)
✅ Durable 420D nylon with DWR coating – weather resistant & built to last
📏 Dimensions (size M): approx. 14 × 8 × 5 in (36 × 20 × 13 cm)
⚖️ Weight: 0.84 lb (3–6 L) / 0.97 lb (7–10 L)
📐 Adjustable waist belt: fits 20 – 51 in (50 – 130 cm)
