GUB Adjustable Bicycle Helmet with PC Shell, EPS Structure, 17 Vents, Rear Fit Dial and Removable Lining in Three Sizes for 52 to 61cm Head Circumference

Adjustable bicycle helmet in three fit ranges

This GUB bicycle helmet combines a PC outer shell, EPS structure,17 ventilation openings and an adjustable rear retention system. The available sizes cover three separate head-circumference ranges: S 52-56 cm, M 56-58 cm and L 58-61 cm. Each of the four color finishes is offered in all three sizes, giving twelve selectable combinations.

Select the size by actual head circumference

Measure actual head circumference and compare it with the selected size range. The rear dial and strap adjustment allow the fit to be adjusted within the chosen helmet size. The head-measurement and helmet-position diagrams below provide visual references. Color selection does not change the size range; choose both the finish and the correct S, M or L option.

PC shell and EPS structure

The source parameter panel identifies a PC shell and EPS structure formed together in the illustrated construction. The cutaway and material photographs show the actual shell/structure arrangement. The stated 95 g/L figure describes source EPS density; the separate product net weights are listed by size below.

Ventilation openings and front details

The source lists 17 vents and provides front, side, top and underside views showing their actual placement. The glasses-placement panel illustrates eyewear resting at the front vent area. The photographs retain the actual vent shape and shell profile so the selected finish and opening layout can be compared.

Rear dial, retention straps and buckle

Close-up images show the rear adjustment dial, internal retention assembly, strap divider, chin pad and buckle. The source identifies an ITW buckle in its dedicated detail panel. The retention-system photograph and adjustment arrows show the actual hardware arrangement, while the shell-edge close-up shows the outside-to-inside construction at the helmet rim.

Removable comfort lining

The internal photographs show the comfort lining and its position around the EPS structure and ventilation openings. A separate lining illustration and close-up views show the actual contact areas. The lining is removable in the source detail panel; its physical panel shapes and locations are retained in the images below.

Four separate color finishes

Choose Pearl White, Matte Black, Milk Tea or Starlight. The Starlight finish has the shifting dark iridescent appearance shown in its actual option and multi-view photographs. Each color option uses its corresponding photograph for all available sizes. The wearing examples show the helmet with separate eyewear and cycling clothing; these demonstration items are not included.

Size-specific product weights and dimensions

Approximate product net weights are 230 g for S,255 g for M and 280 g for L. The S-specific parameter panel gives approximately 236 mm length,195 mm width and 128 mm height. The M-size reference diagram gives approximately 255 mm length,210 mm width and 145 mm height. These exterior dimensions are size-specific references and do not replace the head-circumference ranges. One selected-color and selected-size helmet is supplied.