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      IMPI Sportswear has been designed specifically for teens and pre-teens, so you may find the "fit" a bit smaller. 

      While its best to measure as per our size guide page, here are some more ways to work out your preferred size remembering everyone likes a slightly different "fit".

        As a rough guide, our sizes are similar to the small ladies sizes 0-8. Bear in mind the bust/chest measurements will be slightly smaller for IMPI sizes as the product is designed for teenagers. To show this slight variation we have placed a T in front of the relevant ladies size.

        Running shorts

        xs = size 0 age 8-10/11 years approx T0
        s = size 2 age 11-13/14 years approx T2
        m = size 4 age 14-15/16 years approx  T4
        l = size 6 age 15-16/17 years approx T6
        xl = size 8 age 16-18/small adult years approx T8


        Strappy crops

        xs age 6-7 years approx  T0
        s = size 2 age 8-10/11 years approx T2
        m = size 4 age 11-13/14 years approx T4
        l = size 6 age 14-15/16 years approx T6
        xl = size 8 age 16-17/18 years approx T8


        We know its not always easy to purchase online, so we have provided some of our model's measurements to help you work out which size will fit you best. Most of our running models prefer a snug fit for the shorts, so have opted for a smaller size in the running shorts and a size up in the strappy crop.

        Please do not hesitate to contact us if you need any further assistance in selecting the right size for you! We value your feedback and would love to know how our garments are fitting and where we can improve as we grow our business. Contact us at

        Imogen snakeskin strappy crop and running shorts  

        Age 17 

        Height -170cm tall 
        Waist - 67cm 
        Chest - 75cm
        Hips -  84cm

        Wears - Large elastic running shorts, XLarge strappy running bra

        Age 15 
        Height -161cm tall 
        Waist - 65cm 
        Chest - 73cm
        Hips - 81cm

        Wears - Medium for longer fit;  Medium strappy running bra

        Keira strappy crop and elastic running shorts

        Age 14 
        Height -161cm tall 
        Waist - 64cm 
        Chest - 75cm
        Hips - 75cm

        Wears - Small elastic running shorts and Medium strappy running bra


        Ella running strappy and shorts

        Age 11 
        Height -131cm tall 
        Waist - 62cm 
        Chest - 67cm
        Hips - 70cm

        Wears - XSmall elastic running shorts a Small strappy running bra;  size 10 Little Impis range blue tribal pants. She also wears the size 10 racer t back crop 

        Ava kids running shorts and crop

        Age 9 
        Height -131cm tall 
        Waist - 57cm 
        Chest - 65cm
        Hips - 67cm
        Wears - size 6 Little Impis running shorts. She also wears the size 8 racer t back crop and XSmall elastic running shorts.

        Mia snakeskin kiddies

        Age 8 (Mia in the middle)

        Height - 123cm
        Waist - 59cm
        Chest - 58cm
        Hips - 62cm

        Wears - size 6 Little Impis running shorts. She also wears the size 6 racer t back crop.


        Age 7 
        Height -123cm tall 
        Waist - 55cm 
        Chest - 63cm
        Hips - 63cm
        Wears - size 6 Little Impis running shorts. She also wears the size 6 racer t back crop 

        Kiddies range

        Age 4 (Eva on the right)
        Height -110cm tall 
        Waist - 49cm 
        Chest - 57cm
        Hips - 56cm

        Wears - size 4 Little Impis running shorts. She also wears the size 4 racer t back crop 


        Size guide


        Size Guide
         Approx age 8-11yrs 11-14 14-16 15-17 16-18
         Impis xs = size 0 s = size 2  m = size 4 l = size 6  xl = size 8
        Bust 63-65cm 65-68cm 68-74cm 74-81cm 81-89cm
        Waist 58-62cm 62-64cm 64-68cm 68-72cm 72-76cm
        Hips 69-73cm 73-77cm 77-82cm 82-87cm 87-91cm
        Little Impis 4yrs 6yrs 8yrs 10yrs 12yrs
        Bust 52-58cm 58-63cm 63-67cm 67-74cm 74-81cm
        Waist 46-51cm  51-57cm 57-63cm 63-67cm 67-71cm
        Hips 53-58cm 58-65cm 65-72cm 72-79cm 79-84cm