plain riddll speedflex helmet Riddell Adult Football Riddell SpeedFlex Youth Football Helmet Riddell SpeedFlex - YOUTH Green

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This helmet wont rattle or wobble while you are racing at high speeds

Helmet Sizes 3XS Head Circumference Inches 17 1/8" - 18" Head Circumference Metric43.5 - 45.7 cm Hat Sizes 5 4/9 - 5 3/4 2XS Head Circumference Inches 18 1/8" - 19" Head Circumference Metric 46 - 48.3 cm Hat Sizes 5 3/4 - 6 XS Head Circumference Inches 19 1/8" - 20" Head Circumference Metric 48.6 - 50.8 cm Hat Sizes 6 - 6 3/8 S Head Circumference Inches 20 1/8" - 21" Head Circumference Metric 51.1 - 53.3 cm Hat Sizes 6 2/5 - 6 2/3 M Head Circumference Inches 21 1/8" - 22" Head Circumference Metric 53.7 - 55.9 cm Hat Sizes 6 5/7 7 L Head Circumference Inches 22 1/8" - 23" Head Circumference Metric 56.2 - 58.4 cm Hat Sizes 7 - 7 1/3 XL Head Circumference Inches 23 1/8" - 24" Head Circumference Metric 58.7 - 61 cm Hat Sizes 7 1/3 - 7 2/3 2XL Head Circumference Inches 24 1/8" - 25" Head Circumference Metric 61.3 - 63.5 cm Hat Sizes 7 2/3 8 3XL Head Circumference Inches 25 1/8" - 26" Head Circumference Metric 63.8 - 66 cm Hat Sizes 8 8 2/7 4XL Head Circumference Inches 26 1/8" - 27" Head Circumference Metric 66.4 - 68.6 cm Hat Sizes 8 1/3 - 8 3/5

There are no flat spots for the helmet to hook up onan Arai helmet wants to slide and rotate freely during a crash

For example, youll want a burlier zipper for the main compartment where there will be more tension than on pockets