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Bike Helmet Size Chart

A properly fitting helmet is important for safety and comfort while riding a bicycle.  

Step 1.  Measure your head.

Nutcase Bike Helmet Measurement Image

Measure the circumference of your head with a tape measure. Place the tape measure slightly above the ear and bring it across the mid forehead completely circling the head about 1 inch above the eyebrows. Take several measurements to make sure you have the largest size. If you do not have a tape measure, use a string and measure it against a ruler. 


Step 2. Choose your helmet.  The chart below shows which helmets fit for each head size.  

 

46cm

47cm

48cm

49cm

50cm

51cm

52cm

53cm

54cm

55cm

56cm

57cm

58cm

59cm

60cm

61cm

62cm

63cm

64cm

Lazer P’Nut and P’Nut MIPS Helmets

46-50cm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nutcase Baby Nutty Helmet

47-50cm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nutcase Little Nutty Helmet

46-50cm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lazer Nut’z and Nut’z MIPS Helmets

50-56cm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lazer J1 Junior Helmet

52-56cm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nutcase Adult Small Helmet

52-56cm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lazer Adult Small Helmet

52-56cm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lazer Adult Medium Helmet

55-60cm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nutcase Adult Medium Helmet

56-60cm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lazer Adult Large Helmet

58-62cm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nutcase Adult Large Helmet

60-64cm