Giro Size Chart

    GIRO SIZE GUIDE

    These size charts and conversions are meant to serve as a guide. We recommend you try-on before riding to ensure full comfort and performance.

    BIKE HELMET SIZE GUIDE

    ADULT SUPER FIT BIKE HELMET SIZE   

    CIRCUMFERENCE

    S

    51 - 55 cm

    M

    55 - 59 cm

    L

    59 - 63 cm

    XL

    63 - 65 cm


    YOUTH BIKE HELMET SIZE

    CIRCUMFERENCE

    XS (Scamp Model)

    45 - 49 cm

    S (Scamp Model)

    49 - 53 cm

    XS (Dime Model)

    47 - 51 cm 

    S (Dime Model)

    51 - 55 cm

    Universal Child

    47 - 54 cm

    Universal Youth (Ages 5+)

    50 - 57 cm


    ADULT SUPER FIT FULL FACE BIKE HELMET

    CIRCUMFERENCE

    S

    51 - 53 cm

    M

    51 - 55 cm

    L

    55 - 59 cm

    XL

    59 - 63 cm


    ADULT UNIVERSAL BIKE HELMET        

    CIRCUMFERENCE

    Women Adult

    50 - 57 cm

    Unisex

    54 - 61 cm

    Extra Large

    58 - 65 cm

     

    SNOW HELMET SIZE GUIDE

    ADULT SNOW HELMET SIZE

    CIRCUMFERENCE

    S

    52 - 55.5 cm

    M

    55.5 - 59 cm

    L

    59 - 62.5 cm

    XL

    62.5 - 65 cm


    YOUTH SNOW HELMET SIZE

    CIRCUMFERENCE

    XS

    48.5 - 52 cm

    S

    52 - 55.5 cm

    M

    55.5 - 59 cm

     

    MEN’S TOPS SIZE GUIDE

    SIZE

    CHEST

    WAIST

    XS

    33 - 35” / 83.8 - 88.9 cm

    27 - 29” / 68.6 - 73.7 cm

    S

    35 - 37” / 88.9 - 94 cm 

    29 - 31” / 73.7 - 78.7 cm

    M

    38 - 40” / 96.5 - 101.6 cm

    31 - 33” / 78.7 - 83.8 cm

    L

    41 - 43” / 104.1 - 109.2 cm 

    33 - 35” / 83.8 - 88.9 cm

    XL

    44 - 46” / 111.8 - 116.8 cm 

    35 - 37” / 88.9 - 94 cm

    XXL

    47 - 49” / 119.4 - 124.5 cm

    37 - 39” / 94 - 99.1 cm

    XXXL

    50 - 52” / 127 - 132.1 cm

    39 - 41” / 99.1 - 104.1 cm

     

    WOMEN’S TOPS SIZE GUIDE

    SIZE

    CHEST

    WAIST

    XXS

    30 - 31” / 76.2 - 78.7 cm

    22 - 24” / 55.9 - 61 cm

    XS

    32 - 33” / 81.3 - 83. cm

    24 - 26” / 61 - 66 cm 

    S

    34 - 35” / 86.4 - 88.9 cm

    26 - 28” / 66 - 71.1 cm

    M

    36 - 37” / 91.4 - 94 cm 

    28 - 30” / 71.1 - 76.2 cm 

    L

    38 - 39” / 96.5 - 99.1 cm

    30 - 32” / 76.2 - 81.3 cm

    XL

    39 - 41” / 99.1 - 104.1 cm

    32 - 34” / 81.3 - 86.4 cm

    XXL

    41 - 43” / 104.1 - 109.2 cm

    34 - 36” / 86.4 - 91. 4cm 

     

    MEN’S BOTTOMS SIZE GUIDE

    SIZE

    HIP

    WAIST

    28 (XS)

    33 - 35” / 83.8 - 88.9 cm

    27 - 29” / 68.6 - 73.7 cm

    30 (S)

    35 - 37” / 88.9 - 94 cm 

    29 - 31” / 73.7 - 78.7 cm

    32 (M)

    38 - 40” / 96.5 - 101.6 cm 

    31 - 33” / 78.7 - 83.8 cm

    34 (L)

    40 - 42” / 101.6 - 106.7 cm 

    33 - 35” / 83.8 - 88.9 cm 

    36 (XL)

    42 - 44” / 106.7 - 111.8 cm 

    35 - 37” / 88.9 - 94 cm

    38 (XXL)

    44 - 46” / 111.8 - 116.8 cm

    37 - 39” / 94 - 99.1 cm

    40 (XXXL)

    46 - 48” / 116.8 - 121.9 cm

    39 - 41” / 99.1 - 104.1 cm

     

    WOMEN’S BOTTOMS SIZE GUIDE

    SIZE

    HIP

    WAIST

    XS

    32 - 34” / 81.3 - 86.4 cm 

    22 - 24” / 55.9 - 61 cm

    S

    34 - 36” / 86.4 - 91.4 cm 

    24 - 26” / 61 - 66 cm

    M

    36 - 38” / 91.4 - 96.5 cm

    26 - 28” / 66 - 71.1 cm

    L

    38 - 40” / 96.5 - 101.6 cm

    28 - 30” / 71.1 - 76.2 cm 

    XL

    40 - 42” / 101.6 - 106.7 cm

    30 - 32” / 76.2 - 81.3 cm

    XXL

    42 - 44” / 106.7 - 111.8 cm

    32 - 34” / 81.3 - 86.4 cm 

    XXXL

    44 - 46” / 111.8 - 116.8 cm

    34 - 36” / 86.4 - 91.4 cm


    GLOVES SIZE GUIDE

    MEN'S GLOVE SIZE  

    HAND WIDTH

    HAND LENGTH

    XS (6)

    6.3 - 7” / 160 - 178 mm

    5.9 - 6.5” / 150 - 164 mm

    S (7)

    7” / 179 - 200 mm

    6.5 - 7” / 165 - 179 mm

    M (8)

    8 - 8.6” / 201 - 219 mm

    7 - 7.6” / 180 - 194 mm

    L (9)

    8.7 - 9” / 220 - 234 mm

    7.7 - 8” / 195 - 204 mm

    XL (10)

    9.25 - 9.8” / 235 - 249 mm

    8 - 8.6” / 205 - 21 9mm 

    XXL (11)

    9.85 - 10” / 250 - 265 mm

    8.7 - 9.25” / 220 - 235 mm

    XXXL (12)

    10.4 - 10.6” / 265 - 270 mm

    9.25 - 9.6” / 235 - 245 mm


    WOMEN'S GLOVE SIZE

    HAND WIDTH

    HAND LENGTH

    S (6)

    6 - 6.7” / 155 - 169 mm

    6.3 - 6.7” / 160 - 169 mm

    M (7)

    6.7 - 7.4” / 170 - 189 mm

    6.7 - 7.2” / 170 - 18 mm

    L (8)

    7.4 - 8” / 190 - 204 mm

    7.3 - 7.7” / 185 - 195 mm

    XL (9)

    8 - 8.3” / 205 - 210 mm

    7.7 - 8” / 196 - 205 mm


    YOUTH GLOVE SIZE

    HAND WIDTH

    HAND LENGTH

    XS (3)

    5.2 - 5.6” / 133 - 142 mm

    5.9 - 6” / 150 - 154 mm

    S (4)

    5.6 - 5.9” / 143 - 152 mm

    6 - 6.3” / 155 - 159 mm

    M (5)

    6 - 6.4” / 153 - 162 mm

    6.3 - 6.5” / 160 - 165 mm

    L (6)

    6.4 - 6.8” / 163 - 172 mm

    6.5 - 6.7” / 165 - 169 mm

     

    SOCK SIZE GUIDE

    SOCK SIZE

    EU SHOE

    MENS US SHOE

    S

    36 - 39

    4 - 6.5

    M

    40 - 42 

    7.5 - 9

    L

    43 - 45

    9.5 - 11

    XL

    46 - 48

    12 - 13.5

     

    FOOTWEAR SIZE CONVERSIONS

    EU SIZE 

    US MENS

    US WOMENS

    36

    5

    37

    6

    37.5

    6.5

    38

    6.5

    38.5

    7

    39

    6.5

    7.5

    39.5

    7

    8

    40

    7.5

    8.5

    40.5

    7.5

    8.5

    41

    8

    9

    41.5

    8.5

    9.5

    42

    9.5

    10.5

    42.5

    9.5

    10.5

    43

    9.5

    10.5

    43.5

    10

    44

    10.5

    44.5

    11

    46

    12

    46.5

    12.5

    47

    13

    48

    13.5

    49

    14

    50

    15

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