Searching for a navy tracksuit bottoms for DD

[PollysPoppy]

This ought to be easy, right? Except I don't want to pay £25-£40 for Adidas or Nike as she's growing so quickly. Next have nothing. Had a peak on Sports Direct but can't see anything suitable. Don't want 'jogging bottoms' with an elasticated cuff, just a straight leg. Any suggestions as to where I might try please?
TIA

How old is she? DS is 7 and I've found he fits a women's size 4-6 (when hunting for a fancy dress costume! )

I bought some from Next for DD school pe bag, they are a cross between a legging and tracksuit bottom and are that slightly shiney material. I'll try and link for you

We got some from Asda Direct I think they were about £4 & even better they don't have elasticated bottoms

Asda school trousers might fit the bill...jersey, straight leg, elastic waist

direct.asda.com/george/school/trousers/girls-school-jersey-charm-trousers-navy/G002794271,default,pd.html

Can't link from phone but these called 'gym trousers'

Thanks - will have a look in Asda. Saw the Next pair but think they won't be suitable (uniform) due to being shiny.

School shop?