How to Choose and Spec a Nonwoven Drawstring Bag
Cinch backpack vs drawstring pouch
The two builds solve different jobs. A cinch backpack, also called a sackpack, cinch sack, or string backpack, routes two cords through the bottom corners so they close the top and act as shoulder straps. It is made to be worn, so it suits gyms, schools, races, and event giveaways. A drawstring pouch is a simpler cord-top bag for holding shoes, accessories, or gifts and for keeping dust off products in storage and transit; a double cord gives a neater close for packaging. Both are made from 70–120 GSM spunbond polypropylene.
The parts that decide durability
On a drawstring bag, the failure point is almost always the cord or the corner it pulls against. A few things separate a bag that lasts from one that tears in a month:
- Cord: polyester holds up to repeated pulling better than PP; nylon sits in between.
- Eyelets: metal grommets or reinforced fabric at the cord entry stop the cord ripping through the fabric under load.
- Corner reinforcement: on backpacks the bottom corners take the whole weight, so they need extra stitching or a reinforced patch.
- Cord channel: a clean, well-sewn hem keeps the cord running smoothly and from pulling out.
Choosing GSM for drawstring bags
For drawstring bags, GSM sets the weight, feel, and how much the bag carries. Around 70 GSM is fine for light one-time giveaways; 80 GSM is the common weight for a reusable cinch backpack; 90–100 GSM gives more structure for repeat use; and 100–120 GSM suits heavier loads and premium packaging.
| Fabric Weight | Feel | Best For |
| 70 GSM | Light | One-time giveaways, event swag |
| 80 GSM | Reusable, standard | Everyday cinch backpacks |
| 90–100 GSM | More structured | Repeat use, sports sackpacks |
| 100–120 GSM | Sturdy | Heavier loads, premium packaging |
Where drawstring bags work best
Drawstring bags are the default for anything that needs to be light, cheap to brand, and actually reused. Common uses include gym and sports gear, school and library bags, race and event giveaways, trade-show swag, corporate gifts and loyalty rewards, and reusable retail packaging or dust bags for shoes and accessories. Because the bag stays in use after the product is unpacked, a branded drawstring bag keeps the logo in front of the customer far longer than a printed box.
We run fabric, printing, cutting, and sewing in-house, so we can set the cord, eyelets, and fabric weight to the way your bag will be used and hold it consistent across a bulk order. That control is the difference between a giveaway that gets worn for a season and one that tears on the first heavy load.