Can the sliding mechanism on the (30oz) lid be disassembled for washing? My milky tea gets inside and is starting to get crusty/flaky...

I have the older version of the lid too. It usually comes out clean if you put it through the dishwasher but needs a good shake afterwards. You can also try holding it sideways under warm running water for a min and then vigorously shake it over the sink. Try the other side and repeat. Do this with the lid closed and opened.

Is there a way to keep the straw from rattling around? I use it in a quiet office and it so noisy.

You can get silicone bumpers that slide onto the straw on either side of the lid, to hold the straw in place and keep it quiet. Some products even come with tips as well as bumpers, in case you don’t care for the metal straw hitting your teeth. Amazon sells them. I have had zero rattling since I started using them, and I enjoy the tips, no burning your lips on a hot straw.

Just got mine in and I love it. I can tell I’ll need more straws so what size should I get? I like the wide straight one. What size is it?

I have a 40oz Beast which I love. I use the metal extra long straws, however, the regular size metal straws can work.

Can u use this cup without the straw

Mine has no vent which makes it difficult to get much liquid out. I’m considering returning it as I don’t like drinking out of a straw.

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Beast 30 oz Tumbler Stainless Steel Vacuum Insulated Coffee Ice Cup Double Wall Travel Flask (Aquamarine Blue)

Product ID: 40778464

Details

Brand
Greens Steel
Capacity
30 Fluid
Color
Aquamarine
Material
Stainless
Special Feature
Break Shock

🔥Keeps coffee hot all day

❄️14+ hrs ice retention

🛡️Premium 304 stainless steel

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1665262₫

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Description

💼 Sip Like a Boss: Stay Cool, Stay Hot, Stay Ahead.

SWEAT FREE STYLISH - Electro-polished interior and sweat-free exterior keep your hands dry and your tumbler looking flawless all day.
DURABILITY MEETS ELEGANCE - Crafted from premium 18/8 food-grade stainless steel with a sleek powder-coated finish that resists rust and scratches.
TRAVEL READY USER FRIENDLY - Splash-proof closable lid and a perfect 30 oz size that fits most cup holders—your ideal companion for work, gym, or weekend escapes.
UNRIVALED TEMPERATURE MASTERY - Keeps your drinks icy cold or piping hot for 14+ hours—because your hustle never stops.
BONUS BUNDLE FOR ULTIMATE CONVENIENCE - Includes 2 unbreakable straws (curved & wide), a cleaning brush, and an upgraded pop-up lid for effortless sipping and cleaning.

The Beast 30 oz Tumbler by Greens Steel is a premium vacuum-insulated stainless steel flask designed for professionals on the move. Engineered with high-grade 304 stainless steel and double-wall insulation, it keeps beverages hot or cold for over 14 hours. Featuring a splash-proof lid, sweat-free exterior, and a bonus bundle of durable straws and cleaning tools, this tumbler combines durability, style, and convenience in a vibrant aquamarine blue finish. Perfect for millennial managers who demand performance and aesthetics in their daily hydration.

Specifications

ASIN	B01N2IYXTG
Age Range Description	Adult
Best Sellers Rank	#528 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #19 in Insulated Tumblers
Brand Name	Greens Steel
Capacity	30 Fluid Ounces
Color	Aquamarine Blue
Customer Reviews	4.6 4.6 out of 5 stars (81,088)
Included Components	Lid, Sleeve, Straw
Is the item dishwasher safe?	Yes
Item Dimensions W x H	4.3"W x 4.2"H
Item Type Name	Tumbler
Item Weight	1.06 Pounds
Manufacturer	Greens Steel
Manufacturer Part Number	14184505
Material Features	Insulated
Material Type	Stainless Steel
Model Number	8541997747
Number of Items	1
Occasion	Travel
Other Special Features of the Product	Break Resistant, Shock resistant, Tear-resistant, insulation
Pattern	Solid
Product Care Instructions	Hand Wash Only
Product Style	30oz
Recommended Uses For Product	traveler
Reusability	Reusable
Shape	turn
Size	30 Ounces
Specific Uses For Product	Cold Drinks, Hot Drinks
Theme	No theme
Unit Count	1.0 Count

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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1665262₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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