evo.com | Salomon Hydration Packs > The Salomon Gravel Skin 4 Hydration Pack is built for runners who find themselves venturing off the beaten path, blending urban design with gravel-ready functionality to handle seamless transitions from pavement to grass to dirt without skipping a beat. At 4 liters, it delivers bounce-free stability and soft comfort with easy-access storage. Two 500ml Soft Flasks Included Body 76% Polyamide / 24% Elastane Volume 4L Weight 5 oz X Shape Technology A smart mix of stretch and high-support materials in a X-shape construction to stabilize the equipment stored and keep bounce to a minimum. | Salomon Gravel Skin 4 Hydration Pack 2026 - X-Large in Black | Elastane