Travel credit card holder wallet features RFID protection to keep digital credit cards secure RFID-proof fabric lining protects cards from the low-power signal emitted by a credit card or passport chip Durable 210D nylon exterior holds up in rugged conditions Slim profile features four internal card sleeves and elastic closure Travel wallet measures 3.7 x 2.8 inches and weighs 0.03 pounds The Sea to Summit Travelling Light RFID Card Holder is a travel wallet offering RFID protection to keep digital credit cards secure. Featuring an RFID-proof fabric lining that protects cards from the low-power signal emitted by a credit card or passport chip, the slim profile includes four credit card sleeves and elastic closure. The durable 210D nylon exterior holds up in rugged conditions for years of travel and adventure. The Sea to Summit Sea to Summit Travelling Light RFID Card Holder measures 3.7 x 2.8 inches and weighs 0.03 pounds. (Note that RFID-protected products only offer protection against scanning of the very low-power signal emitted by a credit card or passport chip; they will not block a higher power radio signal such as a Smartphone or a Car-Key or Garage remote.) Sea to Summit products are guaranteed against defects in materials or workmanship for the lifetime of the product.