The most common and most likely answer to this crossword clue is the 8 letter word SLIP-ONS
S
L
I
P
-
O
N
S
More clues leading to the result SLIP-ONS
Buddy explains!

The straight part
We know that "comfy shoes" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case comfy shoes = slip-ons.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 SLIP-ONS mean?
SLIP-ONS noun- A garment that can be pulled on without adjusting fasteners such as buttons or zippers.