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

Product ID: 239972051

Details

Brand
Greens Steel
Capacity
40 fluid
Color
Aquamarine
Material
Stainless
Special Feature
Durable

🔒Vacuum insulated double wall for max temperature retention

🧊40oz capacity for all-day hydration

♻️Premium 304 18/8 stainless steel, eco-friendly & BPA free

255.34 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💼 Hydrate like a boss with the Beast: big, bold, and built to last!

TRAVEL READY DESIGN - Fits most car cup holders, splash-proof lid with tight seal, and easy to clean—perfect for the on-the-go professional.
MASSIVE 40 OZ CAPACITY - Stay fueled and hydrated from morning meetings to late-night grind without constant refills.
DURABLE STYLISH FINISH - Powder-coated aquamarine blue with electro-polished interior ensures no flavor transfer and a scratch-resistant look that lasts.
BONUS ECO FRIENDLY BUNDLE - Includes 2 reusable metal straws, straw brush, and upgraded pop-up lid—clean convenience meets sustainability.
INDUSTRY LEADING INSULATION - Keeps your coffee piping hot or your water ice-cold for hours—no compromises on temperature.

The Beast 40oz Tumbler by Greens Steel is a premium, vacuum-insulated stainless steel travel flask designed for professionals who demand durability, style, and superior temperature retention. Featuring a massive 40oz capacity, double-wall insulation, and a splash-proof lid, it keeps beverages hot or cold for hours. The tumbler comes with an eco-friendly bonus bundle including two reusable metal straws and a cleaning brush, all housed in a sleek powder-coated finish that resists scratches and flavor transfer. Perfectly sized for car cup holders and daily use, it’s a sustainable, high-performance companion for your busy lifestyle.

Specifications

ASIN	B08GTMNRRK
Age Range Description	Adult
Best Sellers Rank	#3,268 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #47 in Insulated Tumblers
Brand Name	Greens Steel
Capacity	40 fluid ounces
Color	Aquamarine Blue
Customer Package Type	Standard Package
Customer Reviews	4.6 4.6 out of 5 stars (81,787)
Included Components	1 Cup, 2 Brushes, Lid, Straw
Item Dimensions W x H	4.59"W x 7.72"H
Manufacturer	Greens Steel
Material Features	Insulated
Material Type	Stainless Steel
Material Type Free	BPA Free
Number of Items	1
Occasion	Travel
Other Special Features of the Product	Durable
Pattern	Solid
Product Care Instructions	Hand Wash Only, Machine Wash
Product Style	40oz
Recommended Uses For Product	Coffee, Tea, Water
Reusability	Reusable
Shape	glasses
Size	40 Ounces
Specific Uses For Product	Cold Drinks, Hot Drinks
Theme	Vehicle
Unit Count	1 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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255.34 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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2 months ago

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