fastening strap
nounUK /ˈfɑːsənɪŋ stræp/
US /ˈfæsənɪŋ stræp/
A strap is a long strip that holds things together or keeps them in place.
He used a fastening strap to tie the box to the cart.
OTHER MEANINGS
2. A strap with a buckle or clasp used to secure luggage or cargo.
The fastening strap on my suitcase broke at the airport.
3. A band used to hold a helmet or shoe in place.
She tightened the fastening strap on her bike helmet.
4. A strip of material used to close a bag or garment.
The backpack has a fastening strap across the top.