Jayjays daysack When we undertook this project, we asked soldiers for their opinion on what they thought would be the ultimate daysack. JayJays Windproof SAS Smock - (MTP). Blog. A range of 'Daysack Mods' from Genuine JayJays Ltd . **This item does NOT include a Daysack - only the fitted modification** Details: This modification adds a pad of spacer foam fabric to the rear of your pack. Customer Support 01874 610036 Contact Us Jay Jays’ bags are made to go everywhere with you. Customer Support 01874 610036 Contact Us JayJays Berghaus Munro - Daysack Modification - Back Pad. Ideal after fit item for military use. Highlander M50 Letre Daysack Multi Terrain Camouflage. Whether you’re embarking on a solo trek or hitting the trails with friends, this Day Sack empowers you to fully immerse yourself in the beauty of nature, without being weighed down by out of date cumbersome gear. olmgybppolyagqwjloirtwtoncsmyittckcxesiakzkoegtcolrinanmlsyypbfovtsnwicguuqr