Strong magnets give the PRO Daypack tank bag a firm hold, even on uneven terrain. Its sophisticated base plate design allows it to be released from the tank without exerting excessive force.The PRO tank bags offer elegant and timeless design together with durable materials and sophisticated product features: Ballistic nylon material protects the luggage against shocks, wind and weather. The top, made of laminated EVA material, gives the bags a distinctive shape and, along with a MOLLE attachment, ensures a secure hold for smartphone and tablet holders.