Icebreaker Mens Mountaineer Mid Calf Merino Wool Sock Size:L The SR3 has 8 levels

The SR3 has 8 levels of brightness from Min to Max: 5 Lumens

Weight: 123g/4

Case Material: High impact ABS plastic

giving it outstanding comfort and breathability in summer

Main compartment approx 21â„¢ x 13â„¢ x 8â„¢ with tie down strap

Icebreaker Mens Mountaineer Mid Calf Merino Wool Sock Size:L The SR3 has 8 levelsThese socks will keep your feet warm even in the coldest conditions. Extra heavy cushioning zones provide maximum protection,warmth and comfort. Archilles support Instep support Reinforced heel and toe for durability and strength LIN toe seam to prevent blisters Breathable flat zone for air circulation Men's Sizing Sock Size Small Medium Large Extra Large USA 7 8. 5 9 10. 5 11 12. 5 13 14. 5 UK 6 7. 5 8 9. 5 10 11. 5 12 13. 5 Europe 39 41. 5 42 44 44.