KNOX Micro-Lock Compact - Shoulders (Level 1)Level 1 protection Micro Lock Compact Shoulder armour inserts by Knox the low profile and discreet option for your Knox motorcycle jacket or Knox armoured shirt. Micro Lock Compact armour is the thinnest and lightest protection from Knox, that is hardly noticeable in a garment. At 6mm thick, the Level 1 Micro Lock Compact is 33% thinner and 25% lighter than the Level 2 Micro Lock Compact armour option. Perfect for urban or city riders who want