BIRKENSTOCK Cork Thong EVA New Style Size 36-45 Flip Flops Thong Sandals A328

Unboxing the BIRKENSTOCK Cork Thong EVA A328: A New Standard in Lightweight Comfort

When you first hold the BIRKENSTOCK Cork Thong EVA A328, you’ll notice its surprising lightness. This isn’t your typical flip flop—it’s a fusion of BIRKENSTOCK’s legendary footbed technology and modern EVA construction. Designed for sizes 36-45, this thong sandal redefines what a casual slip-on can be. Let’s walk through every detail that makes it a must-have for warm-weather adventures.

The Magic of EVA: Why This Material Matters

The entire sole of the A328 is crafted from EVA (ethylene-vinyl acetate), a closed-cell foam that’s both ultra-light and shock-absorbent. Unlike traditional rubber, EVA doesn’t absorb water, making these flip flops ideal for poolside, beach trips, or sudden rain showers. The material also offers excellent flexibility, allowing the sandal to move naturally with your foot. Yet, despite its softness, EVA is remarkably durable—resistant to cracking and deformation even with daily wear.

Anatomy of the Cork Footbed: Support Meets Sustainability

Beneath the thong strap lies the heart of the sandal: the contoured cork footbed. Cork is a renewable resource harvested from cork oak trees without harming them. The footbed features a deep heel cup that cradles your foot, a pronounced arch support that aligns your posture, and a metatarsal pad that encourages natural toe grip. This anatomical shape reduces strain on your knees and lower back—a rare benefit in a flip flop. Over time, the cork molds to your unique foot shape, delivering personalized comfort.

Strap Design and Adjustability: A Secure Fit

The single thong strap is made from the same EVA foam, ensuring a smooth, irritation-free surface between your toes. Unlike leather or fabric thongs, this EVA strap won’t chafe or cause blisters, even when wet. The strap is fixed but strategically positioned to accommodate a range of foot volumes. If you prefer a snugger fit, you can heat-mold the cork footbed slightly (use a hairdryer on low heat for 30 seconds) to soften it, then wear the sandals until the cork cools—this speeds up the break-in process.

Sizing and Fit: How to Choose Your Perfect Size

The A328 is available in European sizes 36 to 45, which roughly correspond to US women’s 5-11 and US men’s 4-13. To find your size, measure your foot from heel to longest toe and compare with BIRKENSTOCK’s size chart. The thong style means there’s no back strap, so your heel should sit comfortably within the heel cup without hanging over the edge. If you’re between sizes, choose the larger size—you can always add a thin insole if needed. For wide feet, note that BIRKENSTOCK’s regular width is suitable for most foot shapes, but if you have particularly wide feet, consider sizing up.

Care Instructions: Keeping Your Cork Thongs Fresh

Cork is a natural material that requires gentle care. To clean, use a damp cloth with mild soap and water; avoid submerging the footbed. For stubborn dirt, a soft brush can help. After cleaning, let them air dry away from direct heat sources like radiators or sunlight—excessive heat can dry out the cork and cause cracking. To maintain the footbed’s shape and hygiene, apply a cork sealant every few months. The EVA strap can be wiped clean easily. When not in use, store the flip flops in a cool, dry place; avoid leaving them in a hot car, as high temperatures may deform the EVA.

Use Cases: Where the A328 Excels

• Beach and Pool: Water-resistant EVA means no waterlogging, and the cork footbed provides stable traction on wet surfaces. Rinse with fresh water after saltwater or chlorine exposure.
• Casual Outings: Pair with shorts, sundresses, or jeans for effortless summer style. The neutral cork color complements almost any outfit.
• Travel: Ultra-lightweight (around 200g per sandal) makes them perfect for packing. They double as shower shoes in hostels or gyms.
• Everyday Comfort: If you’re on your feet all day, the arch support can prevent fatigue better than standard flip flops. Ideal for errands, gardening, or lounging.

Comparing to Other BIRKENSTOCK Models

Unlike the classic Arizona or Madrid models, the Cork Thong EVA is entirely foam-based, making it more flexible and lightweight. It lacks the adjustable buckle straps of the Arizona, but the thong design offers a minimalist, slip-on convenience. Compared to BIRKENSTOCK’s other EVA styles (like the Eva Madrid), the A328 features a thicker, more contoured cork footbed for enhanced support. It’s also more affordable than leather versions, offering the same ergonomic benefits at a lower price point.

What Customers Love

Owners frequently praise the immediate comfort—no break-in period required. The arch support is often described as “heavenly” for flat feet. The water resistance is a game-changer for those who live near the coast. However, note that the smooth EVA strap may require a small toe separator (like a gel toe tube) for those sensitive between the toes. Also, because the footbed is not removable, the sandals cannot accommodate custom orthotics.

Final Verdict: A Summer Staple That Cares for Your Feet

The BIRKENSTOCK Cork Thong EVA A328 is more than a casual flip flop—it’s an investment in foot health. With its blend of sustainable cork, lightweight EVA, and anatomical design, it offers superior comfort for daily wear. Whether you’re heading to the beach or just walking the dog, these sandals support your every step. Choose your size from 36 to 45 and step into a new level of summer ease.

Note: This product is sold by BIRKENSTOCK Slip-on Sandals (https://birkenstock-de.shop). For the best fit, measure your feet and consult the size guide before ordering.