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*Guaranteed For Life is valid for all the TETRA STRONG GUARD MAG, TETRA FORCE STRONG GUARD, TETRA FORCE STRONG TWIST, TETRA FORCE SHOCK TWIST, TETRA FORCE SHOCK TECH, TETRA FORCE BOOK-ADVANCE, TETRA FORCE SHOCK-ADVANCE, CLEAR DUO, CLEAR STRONG, GLOSS, GLOSS MAG and AIR FRAME cases purchased from 1 October 2017 onwards, even without a dedicated logo on the packaging.