BIRKENSTOCK Cork Thong EVA New Style Size 36-45 Flip Flops Thong Sandals A156

Your Top Questions About the BIRKENSTOCK Cork Thong EVA A156, Answered

We know shopping for sandals online can bring up lots of little doubts. That’s why we’ve put together this FAQ guide specifically for the BIRKENSTOCK Cork Thong EVA New Style Size 36-45 Flip Flops Thong Sandals A156. No generic fluff—just real answers to the questions our customers ask most.

What Makes the Cork Thong EVA Different from Regular Birkenstocks?

Great question. While classic Birkenstocks use a cork-latex footbed, the Cork Thong EVA combines a genuine cork footbed with an EVA outsole. EVA (ethylene-vinyl acetate) is a lightweight, flexible, and shock-absorbing material. This means you get the iconic Birkenstock arch support and contoured shape, but with added flexibility and a bit more cushioning for all-day wear. The result? A sandal that feels broken in from the start.

Are These Sandals True to Size? How Do I Choose Between 36-45?

Yes, the A156 runs true to standard Birkenstock sizing. If you’ve worn Birkenstocks before, order your usual size. If you’re new to the brand, measure your foot length in centimeters and match it to the Birkenstock size chart. The range 36-45 covers EU sizes 36 through 45, which roughly corresponds to US women’s 5-11 and men’s 4-13. Because of the adjustable thong strap, you can fine-tune the fit around your foot. We recommend going with your exact length—no need to size up.

Can I Wear These in Water or at the Beach?

Absolutely. The EVA outsole is waterproof and dries quickly, while the cork footbed is treated to resist moisture. However, we suggest avoiding prolonged submersion in salt water or chlorinated pools, as that can degrade the cork over time. For beach days, casual poolside lounging, or unexpected rain showers, these sandals are a perfect choice. Just rinse them with fresh water if they get sandy or salty.

Is the Thong Strap Comfortable Between My Toes?

We’ve tested this, and yes—the soft, flexible thong strap is designed to minimize irritation. It’s made from smooth, durable material that won’t chafe, and the toe post is positioned to align naturally with your foot. Many customers report that they forget they’re wearing a thong after a few minutes. If you’re sensitive, you can wear them for short periods initially to let your skin adjust, but in general, they’re built for immediate comfort.

How Long Will These Sandals Last?

With proper care, the A156 model can last several seasons. The EVA outsole is resistant to wear and tear, and the cork footbed retains its shape well. To extend their life, avoid leaving them in direct sunlight for extended periods (which can dry out the cork) and store them in a cool, dry place. The thong strap is securely attached and built to hold up to regular use.

Are They Slip-Resistant?

The EVA outsole has a textured tread pattern that provides good grip on most surfaces, including wet pavement, tile, and grass. While no sandal is 100% slip-proof, these offer reliable traction for everyday summer activities. Just be cautious on very slick surfaces like polished marble or wet metal grates.

Can I Use Them as House Slippers?

Many customers do! Because they’re lightweight, easy to slip on, and have arch support, they’re great for indoor wear. The EVA material is quiet on floors and won’t scuff hardwood. Just note that the cork footbed is not machine-washable, so if you use them exclusively indoors, they’ll stay cleaner longer.

What Colors Are Available?

The A156 comes in a range of neutral and seasonal colors. Common options include Black, White, Mocha, and Sand. For the current season, you may also find limited-edition shades. Check the product page for the exact color selection. The classic colors tend to sell out fast, so grab your favorite when it’s in stock.

How Do I Clean My Birkenstock Cork Thong EVA Sandals?

Cleaning is simple. For the footbed, use a damp cloth with mild soap and gently wipe away dirt. Avoid soaking the cork. For the EVA outsole, you can rinse it under running water. The strap can be wiped clean with a soft cloth. Never put them in the washing machine or dryer—that can damage the cork and cause the strap to loosen.

Are These Unisex? Can Men and Women Wear the Same Size?

Yes, the A156 is a unisex style. Birkenstock sizes are based on foot length, so men and women can choose the same EU size if they have the same foot length. For example, a woman who wears US women’s 8 typically fits EU 38, while a man who wears US men’s 8 usually fits EU 41. Check the size chart for your specific measurement.

Is There a Break-In Period?

Minimal. Because the footbed is cork and the outsole is flexible EVA, the sandals conform to your foot quickly. Most people find them comfortable right out of the box. However, if you’re not used to Birkenstock’s pronounced arch support, you might notice a slight adjustment period of a few days. Wear them for short periods initially, and your feet will adapt.

Do They Come with a Warranty?

Birkenstock offers a limited warranty against manufacturing defects for up to two years from the date of purchase. This covers issues like delamination of the cork footbed or separation of the outsole. Normal wear and tear, including sole abrasion, is not covered. Keep your receipt for warranty claims.

Can I Order if I’m Between Sizes?

Birkenstock does not offer half sizes, so if you’re between two sizes, we recommend going with the larger size. For example, if your foot measures 25.5 cm, you’d typically choose EU size 40 (which fits 25.5-26 cm) rather than size 39. You can then adjust the thong strap for a snug fit.

What Is the Weight of These Sandals?

Each sandal weighs approximately 200-250 grams (7-9 ounces) depending on size. They are noticeably lighter than traditional leather Birkenstocks, making them ideal for travel or all-day wear without fatigue.

Do They Have Arch Support?

Yes! The cork footbed features Birkenstock’s signature arch support, deep heel cup, and metatarsal pad. Even though the outsole is EVA, the footbed is genuine cork, providing the same orthotic benefits you expect from Birkenstock. Your feet will thank you after a long day of walking.

Can I Use Custom Orthotics with These Sandals?

The footbed is contoured, so custom orthotics may not fit well. The design is intended to be worn as-is. If you require additional support, we recommend trying the sandals first—many users find they don’t need extra inserts due to the built-in arch support.

How Do the A156 Compare to the Classic Arizona Two-Strap?

Key differences: The A156 is a thong style, while the Arizona has two adjustable straps. The A156 uses an EVA outsole for flexibility and lightness, whereas the Arizona often has a rubber outsole. The footbed is identical in terms of support. The A156 is more casual and easier to slip on, while the Arizona offers more adjustability. Choose based on your preference for strap style and weight.

Are These Sandals Vegan?

Yes. The A156 uses no animal products. The cork is a natural, renewable material, and the EVA is synthetic. No leather, suede, or wool is used. So if you’re looking for a vegan-friendly Birkenstock, this is an excellent option.

What Is the Heel Height?

The heel height is approximately 20 mm (0.8 inches) at the back, with a slight gradient to the toe area. This provides a natural walking motion without a significant lift.

Can I Wear Socks with These?

While not a fashion crime, the thong design doesn’t pair well with socks generally. But if you’re going for the “socks and sandals” look, go for it. The footbed may feel slightly less grippy with socks, so you might slide a bit.

Do They Make Noise When Walking?

Because the outsole is EVA, it’s very quiet on floors. No clacking or slapping sounds like some hard-soled sandals. This makes them great for quiet environments like offices or libraries.

Are They Suitable for Wide Feet?

Birkenstock offers two widths: Regular and Narrow. The A156 typically comes in Regular (medium) width. If you have wide feet (EE or wider), the Regular width should accommodate most, but you can check the fit with our sizing guide. The thong strap also allows some adjustment.

How Do I Prevent Blisters with New Thong Sandals?

To avoid blisters, start by wearing them for short periods (1-2 hours) around the house. Apply a balm or anti-chafing stick to the toe post area if you feel friction. Once the cork molds to your feet, blisters become unlikely.

What Is the Cork Footbed Made Of?

The footbed is a blend of natural cork granules and latex binder. This combination provides durability, shock absorption, and the ability to mold to your foot over time. The surface is covered with a soft suede-like lining (which is synthetic in this model) for comfort.

Can I Return Them If They Don’t Fit?

Yes, our return policy allows returns within 30 days of delivery for unworn items in original packaging. Exchanges are also available. Please note that final sale items may have different policies, so check the product page for specifics.

Do They Come with a Box?

Yes, your Birkenstock A156 sandals will arrive in a branded Birkenstock box, perfect for gifting or storage.

Is There a Difference Between the A156 and Other Birkenstock Thong Models?

The A156 specifically refers to the Cork Thong EVA model. Other Birkenstock thongs, like the Mayari, use different materials (e.g., full cork footbed with rubber outsole) and different strap designs. The A156 is unique for its lightweight EVA outsole and simplified thong strap.

What If I Have Additional Questions?

If we haven’t covered your concern, feel free to reach out to our customer service team. We’re here to help you find the perfect fit and enjoy your Birkenstock experience.