RIDDLE from Red Bull SPECT Eyewear combines style and function - with exceptional lightness and flexibility. Rubberized, adjustable temple tips ensure a secure fit with every movement. The I°BOOST technology (models RIDDLE-001IBX, -002IB, -003IB) guarantees high-contrast vision. RIDDLE-001IBX also offers CHROM°X with variable tinting (Lens CAT 1-3). The perfect glasses for ambitious cyclists.Lens Category:RIDDLE-001IBX = 1-3RIDDLE-002IB = 2RIDDLE-003IB = 3RIDDLE-004 = 3RIDDLE-005 = 3