• Brooks GuideRails® Support System. We apologise for any delayed responses. 4 37 6 23 230. Extra Wide - 2E. Heel-to-toe drop: 12 mm. 6.5 40 8.5 25.5 255. 8.5 42.5 10.5 28 280. 9.5 44 11.5 29 290.
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