Vtg Hydrapak Ammo Black Nylon Hydration Backpack Unisex 100 L Hydrapak Ammo Black Nylon Hydration Backpack Unisex OS. This technical hydration pack features a durable ballistic nylon construction with a ventilated mesh back panel and adjustable sternum and waist straps for a secure fit during high-intensity activities. The exterior includes a bungee compression system, multiple zippered compartments, and reflective safety accents. The interior is lined in bright blue for high visibility. Ideal for mountain biking, trail running, or hiking where a compact, stable water carrier is essential. Note: Bladder/reservoir is not included. Keywords: Hydrapak Ammo, hydration pack, MTB backpack, trail running bag, hiking water pack, tactical hydration, black nylon bag, outdoor gear, cycling backpack, endurance sports, ventilated pack, adjustable harness, reflective gear, small daypack, hydration carrier. • See photos to confirm condition and sizing. • Ships within 1-2 busines #Sporty #Utility