The most common and most likely answer to this crossword clue is the 9 letter word STROLLERS
I've seen this crossword clue in The Guardian
S
T
R
O
L
L
E
R
S
More clues leading to the result STROLLERS
Buddy explains!

The straight part
We know that "these?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case these? = strollers.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 STROLLERS mean?
STROLLERS noun- A seat or chair on wheels, pushed by somebody walking behind it, typically used for transporting babies and young children.
- One who strolls.
- A vagrant.
- Men's semiformal daytime dress comprising a grey or black single- or double-breasted coat, grey striped or checked formal trousers, a grey or silver necktie, and a grey, black or buff waistcoat.