The Vanga 25 is a fully featured hydration pack for long trail runs and day hiking where access to multiple hydration options and compartmentalization of small equipment is a priority. With fully seam-sealed nylon 6,6 CORDURA fabric and #3 YKK zippers,this packexcels in rugged, wet climates.A lengthy list of features make the Vanga adaptable to a wide range of activities and weather conditions; the packs lightweight construction and components make it a staff favorite here at Peregrine HQ.