™ FITTING AND ADJUSTSMENT The OneK helmets are available in 3 shell sizes. By using the OneK foam liners which are available from XXXS to XXL you can achieve the perfect fit! The liners are available as standard fit and with an oval shape to meet the needs of riders with an oval head shape. The system also allows the helmet to grow with the young rider. SIZE CHART Shell Compatable liners CM Inches 0 XXXS 47-48 5 7/8-6 XXS 49-50 6 1/8- 6 1/4 XS 51-52 6 3/8-6 1/2 S 53-54 6 5/8- 6 3/4 1 XS 51-52 6 3/8-6 1/2 S 53-54 6 5/8- 6 3/4 M 55-56 6 7/8- 7 2 M 55-56 6 7/8- 7 L 57-58 7 1/8- 7 1/4 XL 59-60 7 3/8- 7 1/2 XXL 61-62 7 5/8-7 3/4 3
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