Aquapac 100 waterproof kaituna map case whether youre dinghy sailing or sea kayaking our totally waterproof map case will keep your maps safe dry and always at hand this map case fits ordnance survey trails illustrated and most other popular map sizes key features ultra clear tpu construction tough reinforced multi attachment strips roll seal and velcro closure tried and tested waterproofing the roll down seal will keep out any rain or mud or spray on a kayak the attachment