Princeton Wares Double Wall Insulated Clear Glass Tea Cup Mug 2-Pack 12oz with Bamboo Teaspoons Review (2026)

Who this teacup set is for

Princeton Wares makes this 2-pack of clear double wall glass teacups for someone who drinks tea alone or with one other person and likes watching the color of the tea through clear glass rather than drinking from an opaque mug. Each cup holds 12 ounces, according to the listing, enough for a generous individual serving without needing a refill halfway through a show or a work session. The included bamboo teaspoons round out the set so it is ready to use for sugar or honey right out of the box. Anyone planning to serve tea to a group of guests will need to buy a second set, since this pack only covers two people at a time.

What the glass and insulation actually do

The cups are made from tempered borosilicate glass, the same type of glass used in laboratory measuring equipment, chosen for its resistance to thermal stress compared with regular glass. The double wall construction creates a small air gap between an inner and outer layer of glass, which is what keeps the outside of the cup comfortable to hold even when hot tea is inside, since the air gap slows heat transfer to your hand. The listing describes the cups as mouth blown by hand, which is typical for this style of glassware and explains small natural variations between individual cups. The wide mouth opening is meant to let the aroma of steeping tea rise up as you drink, rather than trapping it inside a narrow neck.

Using and caring for double wall glass

Day to day, these cups work best with loose leaf tea brewed separately or with tea bags, since there is no infuser built in and steeping directly in the cup means fishing out leaves or a bag afterward. Because it is glass, even the more thermal-shock-resistant borosilicate type, sudden extreme temperature swings, like pouring boiling water into a cup straight from the freezer, are worth avoiding, and hand washing rather than tossing the cups into a crowded dishwasher rack reduces the chance of chips from cup-to-cup contact. The bamboo teaspoons should be hand washed and dried promptly rather than soaked, since wood does not hold up well to prolonged water exposure the way the glass does.

Trade-offs and how it compares to other double wall sets

Most competing double wall glass teacup sets, including CNGLASS and TEASOL, sell in sets of four rather than two, which makes this Princeton Wares 2-pack better suited to a couple or a single tea drinker who wants a spare rather than someone who regularly hosts. Against the BNUNWISH mugs, which add a handle, this set stays handle-free for a cleaner, more minimalist look, though that means always holding it by the body, which the double wall design is built to make comfortable. Compared with all of these rivals, glass is glass, so the fragility trade-off is shared across the category rather than unique to this particular set, and anyone choosing double wall glass over stainless steel or ceramic is already accepting that trade-off for the sake of seeing the tea.

Verdict and who should pick a different set

For one or two people who want an elegant, cool-to-the-touch way to watch tea steep and appreciate the bamboo teaspoon detail, this Princeton Wares 2-pack is a good match for our score of 8.8/10 here. Choose a larger set, like a 4-cup CNGLASS or TEASOL option, if you regularly serve tea to guests, since two cups run out fast with company over. It is also not the best choice for a household with young children or a chaotic kitchen, where dropped glass is more likely, and a stainless steel double wall mug would hold up better.

Frequently asked questions