Glass straws for Starbucks® reusable cups
The considered cup collection
Your daily ritual,
beautifully considered.
Borosilicate glass straws for the reusable Starbucks® cup you love.
Find your glass strawA small detail. A personal signature.
Your favorite tumbler is part of your everyday style. Finish it with the clarity, smooth feel and considered color of a Simply Straws glass straw. Designed for iced coffee, cold brew and the moments you make your own.
Made of glass
Borosilicate glass, with no plastic straw body and no metallic aftertaste.
Clarity you can see
Transparent glass lets you inspect the inside. Dishwasher safe for an easy daily routine.
Made to be kept
Reusable by design and backed by our Lifetime Guarantee.
Choose your silhouette
One thoughtful upgrade. Your way.
Choose Classic 9 mm for this collection, then select your color and length. Clear is understated; teal adds a personal accent.
The straight classic
A clean line, a smooth glass finish and a clear view through the straw. An understated companion to your reusable cold cup.
Explore straight glassFeatured selection: Clear · 10 inches · Classic 9 mm
Sold individually. Tumbler not included.
The elegant bend
A gently angled silhouette for relaxed sipping at your desk or favorite café. Choose the Classic diameter when checking your tumbler fit.
Explore bent glassFeatured selection: Clear · 10 inches · Classic 9 mm
Sold individually. Tumbler not included.
Find the right fit for your reusable cup
Start with the straw that came with your cup: measure its length and compare the lid opening with our 9 mm Classic outer diameter. The opening must provide clearance for the glass straw. Never force a straw through a tight lid or gasket.
| Your reusable cup | Where to start | What to check |
|---|---|---|
| 16 oz / Grande | Compare Classic 8-inch and 10-inch lengths | Match your cup height and preferred sipping height. |
| 24 oz / Venti | Consider Classic 10-inch | Confirm full length and clearance through the lid opening. |
| 30 oz / 40 oz or extra-tall tumblers | Explore 12-inch tumbler straws | Check both length and diameter. These are a different straw format. |
A starting guide, not a universal fit guarantee. Starbucks cup designs and lid openings vary by style and year. Photos illustrate styling and do not establish fit for every model.
See the full straw size guide →Glass, plastic and a more considered daily ritual
Choose the material. Know the context.
For those who pay attention to what touches their drink, glass offers a simple material choice. Our straws have a borosilicate glass body in place of a plastic straw body. A glass straw does not make an entire drink or tumbler plastic-free.
Peng and Yu (2025) detected microplastic release from the disposable polypropylene and PLA straws they tested in a laboratory system. This is not a test of reusable Starbucks straws or Simply Straws.
NIST researchers (2022) detected nanoplastic release from LDPE-lined beverage cups exposed to 100°C water for 20 minutes. That was a cup experiment, not evidence about the straws or reusable tumblers in this collection.
These findings concern particle release, not demonstrated health benefits from switching straws. The FDA’s current review says the evidence does not demonstrate that levels detected in foods pose a human-health risk. Glass cannot remove particles originating in a cup, lid or drink.
Keep the tumbler. Rethink the straw.
If an old reusable plastic straw is cloudy, scratched or coffee-stained, consider a glass replacement. Keep the cup you love and choose a straw that suits your style.
Illustrative comparison of worn plastic and new glass, not equal-age products or a laboratory test. Stains do not measure microplastic release.
Care, glass safety and the Lifetime Guarantee
Rinse after use and clean thoroughly, including the inside. Our glass straws are dishwasher safe; a correctly sized cleaning brush can help with residue. Inspect before each use and stop using a straw if it is chipped, cracked or damaged. Glass is durable, but it can break.
This collection is styled for cold drinks. Do not use a straw to sip a scalding drink. Avoid biting the glass, forcing it through a lid or using a lid that puts pressure on the straw.
Every Simply Straws glass straw is backed by our Lifetime Guarantee. See the policy for coverage and the replacement process.
Need help choosing a size? Contact our team with your cup model, lid-opening measurement and current straw length.
An everyday essential, chosen with intention.
Choose your glass strawStraws sold separately. Cups and tumblers are styling props and are not included. Starbucks® is a registered trademark of Starbucks Corporation. Simply Straws is not affiliated with or endorsed by Starbucks Corporation.