The most common and most likely answer to this crossword clue is the 10 letter word SPORTSWEAR
I've seen this crossword clue in Independent
S
P
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More clues leading to the result SPORTSWEAR
- Saw drunk with porters and shorts?
- Small drinks … accept shorts?
- Promise to hide drinks in football kit?
- Tracksuit perhaps fits uphill runner
- Left with son, breaking promise to find tracksuit?
- Played worst in sort of mint Lycra, perhaps
- Trainers, say, promise to keep mood up
- Curse after small opening in whites perhaps
- Star’s power running – in this?
- Past rowers coming out in their kit?
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SPORTSWEAR mean?
SPORTSWEAR noun- Casual clothing that is comfortable to wear when exercising or partaking in sport; activewear.