How do you remove the sliding portion of the lid for cleaning? I read in some other reviews that this is possible.

I didn't know you could remove the lid until you asked and I looked closer. Look on the underside of the lid and see the two plastic slider "legs" that keep the lid on. Pinch them towards the middle of the lid and that allows the slider to release. When done cleaning just push to pop it back on.

Will this work with the maars skinny 20oz tumbler?

No, it does not fit skinny tumbler. It's for 20oz Yeti shape ones.

Will these fit a Calcutta 20 oz tumbler?

I don’t know if they would or not, sorry

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Travel Tumbler Spill Proof Lid

Product ID: 123454768

Details

Brand
SUNWILL
Color
Clear
Material
AS
Product Dimensions
3.3"L x 3.3"W
Style
Modern

🥤Straw Friendly Wide Mouth

♻️BPA Free & Dishwasher Safe

🛡️100% Spill Proof Seal

Description

🥤 Upgrade your sip game with spill-proof style!

SIP YOUR WAY - Wide mouth design accommodates both straight and bent stainless steel straws.
TAILORED FIT - Precision engineered to snugly fit SUNWILL 20oz/24oz tumblers—no awkward slipping.
ECO SMART SAFE - Crafted from premium BPA-free materials, dishwasher safe for effortless cleaning.
LOCK IN EVERY DROP - Silicone O-ring ensures zero leaks and splash resistance for worry-free commuting.
LIFETIME CONFIDENCE - Backed by limited lifetime warranty—because your daily hustle deserves durability.

The SUNWILL 20oz Travel Tumbler Replacement Lids come in a convenient 2-pack, designed exclusively for SUNWILL 20oz and 24oz vacuum insulated tumblers. Made from premium BPA-free silicone and AS materials, these lids feature a spill-proof silicone O-ring and splash-resistant sliding cover to keep your drinks secure on the go. Dishwasher safe and straw friendly, they combine durability with practical design, backed by a limited lifetime warranty for lasting peace of mind.

Specifications

ASIN	B07QS41K3D
Best Sellers Rank	#60,197 in Kitchen & Dining ( See Top 100 in Kitchen & Dining ) #1,421 in Tumblers & Water Glasses
Brand Name	SUNWILL
Closure Type	Snap
Color	Clear
Customer Reviews	4.6 4.6 out of 5 stars (1,572)
Included Components	Lid
Item Dimensions L x W	3.3"L x 3.3"W
Item Weight	3.52 ounces
Manufacturer	SUNWILL
Material Type	AS
Number of Packs	2
Number of Pieces	2
Product Style	Modern
Shape	Round
Unit Count	2 Count

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How is product pricing calculated?+

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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