Can I put this tumbler on its side in a bag without leaking?

Yes, when the Ü-Turn lid is rotated to the locked position. The twist mechanism creates a complete seal for cold and iced carbonated drinks, so the tumbler won't leak even when horizontal or jostled in a backpack or tote.

Why does the straw have both metal and silicone?

The metal core (ColdKey) runs through the center to minimize plastic contact with your drink, while the outer silicone layer (SoftSip) provides a softer surface where your lips and teeth touch the straw. This hybrid design combines rigidity with comfort.

Can I use this with hot coffee or tea?

Not in the locked position. The manufacturer advises against sealing the lid with hot beverages due to pressure buildup and scalding risk from drinking hot liquid through a straw. The tumbler is designed for cold drinks when locked.

How do I use this with sparkling water or soda?

Fill the tumbler with a 50% ice to 50% liquid ratio when using carbonated beverages. Because the lid locks completely, pressure can build, so open the seal slowly after it's been closed for a while to release carbonation gradually.

Will this fit in my car cup holder?

The base is designed to fit standard vehicle cup holders despite the 30-ounce capacity, so it should work in most cars, trucks, and SUVs without tipping or blocking console access.

How long does ice actually last in this tumbler?

The double-wall vacuum insulation keeps drinks cold for more than 24 hours, so ice added in the morning should still be present the next day under typical use. Performance depends on ambient temperature and how often you open the lid.

Era 30oz | Plum

silicone

The 3-second version

Twist-lock lid seals completely when closed, preventing leaks in bags or during travel
Metal straw core wrapped in silicone keeps plastic out of your drink
Vacuum insulation maintains cold temperatures for over 24 hours
Cold beverages only when locked
Carbonated drinks need 50% ice ratio
Requires slow release after sealing carbonation

Why it's on GiftsFeed

Leakproof Straw Tumbler That Locks Shut for Travel

Most straw tumblers drip when tipped or leak slowly in a tote, which defeats the point of portability. The rotating lock on this one actually seals, so you can carry it however you need to without planning routes around spill risk. The hybrid straw—metal down the middle, silicone where you drink—solves the usual trade-off between rigid straws that clack against teeth and floppy silicone ones that collapse mid-sip. If you've avoided insulated tumblers because past lids let you down, the mechanical lock here is the detail that changes the equation.

Good gift when

People who carry drinks in bags or backpacks during commutes
Anyone tired of straw tumblers that leak when tipped over
Those who prefer metal straws but want a softer drinking surface
Drivers who need reliable cold drinks that fit cup holders

Skip it if Not safe for hot drinks in the locked position—steam pressure and straw scalding risk make this a cold-beverage-only design when sealed.

Specs

Capacity: 30 oz
Insulation: Double-wall vacuum (BevGuard™)
Lid type: Ü-Turn™ twist-lock, leakproof when locked
Straw construction: ColdKey™ metal core with SoftSip™ silicone outer layer
Ice retention: 24+ hours
Cup holder compatible: Yes
Carbonated beverage use: Yes, with 50% ice to liquid ratio
Hot beverage use: Not recommended in locked position
Color: Plum

What's included

30oz Era tumbler
Ü-Turn twist-lock lid
ColdKey metal straw core with SoftSip silicone sleeve

If you're giving it

No sizing to guess

Consider color preference; plum is a muted, deeper tone rather than a bright finish.

The details

Toss this tumbler in a bag, knock it over on the passenger seat, or shove it sideways in a packed backpack—the twist-lock mechanism keeps cold drinks sealed until you're ready to sip. The Ü-Turn lid rotates to lock and unlock, making it the rare straw tumbler that won't leak when horizontal or jostled during commutes, hikes, or errands.

A two-part straw system threads through the lid: a rigid metal inner core runs down the center to reduce plastic contact with your drink, wrapped by a soft silicone outer layer where your mouth makes contact. The combination gives you a firmer drinking experience than all-silicone straws while keeping the tip gentle on teeth and lips.

Double-wall vacuum insulation holds ice for more than a day, so water stays cold from morning gym sessions through late-afternoon meetings. The tumbler fits standard vehicle cup holders despite the 30-ounce capacity, and the plum finish offers a deeper, muted alternative to bright jewel tones.

The lid works for still cold drinks and carbonated beverages on ice—add roughly equal parts ice and liquid when you're filling it with sparkling water or soda. Because the vessel locks shut completely, pressure can build with carbonation, so you'll want to crack the seal slowly after it's been closed for a while. The manufacturer advises against locking the lid when using hot drinks, since a sealed straw tumbler and steam don't mix safely.

BruMate

Era 30oz | Plum

30-ounce insulated tumbler with twist-lock lid, metal straw core, and silicone drinking tip

$39.99at brumate.com

Quantity

Buy from BruMate

Ships and sold by BruMate. About this merchant

The 3-second version

Twist-lock lid seals completely when closed, preventing leaks in bags or during travel
Metal straw core wrapped in silicone keeps plastic out of your drink
Vacuum insulation maintains cold temperatures for over 24 hours
Cold beverages only when locked
Carbonated drinks need 50% ice ratio
Requires slow release after sealing carbonation

Cheaper alternatives

Mineral SPF 30 Moisturizer$24.95

Questions

Can I put this tumbler on its side in a bag without leaking?: Yes, when the Ü-Turn lid is rotated to the locked position. The twist mechanism creates a complete seal for cold and iced carbonated drinks, so the tumbler won't leak even when horizontal or jostled in a backpack or tote.
Why does the straw have both metal and silicone?: The metal core (ColdKey) runs through the center to minimize plastic contact with your drink, while the outer silicone layer (SoftSip) provides a softer surface where your lips and teeth touch the straw. This hybrid design combines rigidity with comfort.
Can I use this with hot coffee or tea?: Not in the locked position. The manufacturer advises against sealing the lid with hot beverages due to pressure buildup and scalding risk from drinking hot liquid through a straw. The tumbler is designed for cold drinks when locked.
How do I use this with sparkling water or soda?: Fill the tumbler with a 50% ice to 50% liquid ratio when using carbonated beverages. Because the lid locks completely, pressure can build, so open the seal slowly after it's been closed for a while to release carbonation gradually.
Will this fit in my car cup holder?: The base is designed to fit standard vehicle cup holders despite the 30-ounce capacity, so it should work in most cars, trucks, and SUVs without tipping or blocking console access.
How long does ice actually last in this tumbler?: The double-wall vacuum insulation keeps drinks cold for more than 24 hours, so ice added in the morning should still be present the next day under typical use. Performance depends on ambient temperature and how often you open the lid.