verb / noun
scrunch
SKRUNCH/skrˈʌntʃ/
Tight squeezing that crumples material.
She scrunches the wrapping paper into a tight little ball.

Etymology
Scrunch intensifies crunch: crushing with the teeth broadened into squeezing or crushing more generally. The compact, wrinkled shape in the selected sense is the result of that squeezing.
In context
as you can see these scrunch up super small and packed down nice nicely into a bag ready to go when you need them this is a full-size jacket
More examples
- I give the empty paper bag a scrunch before recycling it.
- Scrunch the damp curls gently with a towel.
- The scarf is scrunched into the bottom of her bag.
Forms
scrunch · scrunches · scrunched · scrunching
scrunchie noun — Elastic hair tie covered in gathered fabric.