BIRKENSTOCK Cork Thong EVA New Style Size 36-45 Flip Flops Thong Sandals A317

BIRKENSTOCK Cork Thong EVA A317: What You Need to Know Before Buying

If you're comparing the BIRKENSTOCK Cork Thong EVA A317 to the brand's classic cork models or other flip flops, this review breaks down the differences that matter. This isn't a generic hype piece — we focus on real-world trade-offs.

Material and Construction

The A317 uses EVA (ethylene vinyl acetate) for both the sole and the footbed. Unlike traditional Birkenstock cork footbeds, EVA is completely waterproof, lighter, and more flexible. The upper is a single-piece EVA thong strap molded into the sole — no glue, no stitching. This means no break-in period and no risk of delamination.

Weight comparison: The EVA thong weighs about 5.5 oz (size 38) versus 8.5 oz for a classic cork Arizona. That half-pound difference per shoe becomes noticeable on long walks or in luggage.

Footbed and Arch Support

Birkenstock's signature contoured footbed is present in the EVA version, but it's less pronounced. The arch support is there but softer. If you rely on the firm, molded cork for overpronation or plantar fasciitis, the EVA may feel like a downgrade. However, for casual wear or for those who find cork too hard, the EVA offers a forgiving alternative.

The heel cup is shallower, and the toe bar (the ridge under the toes) is less aggressive. This makes the A317 more accommodating for people with flat feet or those who dislike the pronounced toe grip.

Durability and Traction

EVA is inherently less durable than cork and rubber. Expect the footbed to compress and lose shape over 2-3 seasons with regular use. The outsole has a subtle tread pattern — adequate for dry pavement and pool decks but not for slick surfaces. Wet tile or smooth rock can be hazardous. Classic Birkenstocks with rubber outsoles offer better grip.

The strap is hollow inside, which means it can tear if snagged. Unlike leather or synthetic uppers, there's no repair option. Once the strap breaks, the sandal is trash.

Fit and Sizing

Sizing is consistent with other Birkenstock models. The EVA material has no give, so width is fixed. If you have wide feet, consider ordering a size up. The thong post is positioned similarly to the classic Mayari, but the strap sits lower on the foot, which may rub the skin between toes for some wearers. A break-in period for the post is minimal but possible.

Size range: 36-45 (Euro). No half sizes — choose based on your foot length in cm using Birkenstock's chart.

When to Choose the A317 Over Classic Birkenstocks

• You need waterproof sandals for pool, beach, or rain
• You prioritize light weight for travel or long walks
• You dislike the rigid feel of cork footbeds
• You want easy cleaning — rinse with water

When to Stick with Classic Cork Birkenstocks

• You require maximum arch support for foot conditions
• You want longevity (cork can last 5+ years with care)
• You need better traction on varied surfaces
• You prefer the natural, biodegradable cork material

Comfort Over Time

New out of the box, the A317 feels comfortable immediately — no break-in. After 4-6 hours of wear, the lack of firm support may cause moderate foot fatigue for those accustomed to orthotics. The footbed temperature is neutral; unlike cork, EVA doesn't mold to your foot shape. It retains some heat in summer but less than rubber.

For all-day walking on flat surfaces, they perform well. For uneven terrain or long standing, the classic cork is superior.

Value for Money

At $69.88, the A317 is priced lower than most leather Birkenstocks but higher than generic EVA flip flops. You're paying for the contoured footbed and brand reliability. The question is whether you need Birkenstock's orthotic shape in a material that compresses faster. If your primary use is casual, occasional wear, the cost-per-wear can be reasonable. If you expect daily use for multiple seasons, invest in classic cork or consider competitors like Chaco or Teva for similar support with more durability.

Also note: the A317 is not a direct replacement for classic Birkenstocks — it's a complementary sandal for specific scenarios. Many owners own both.

Summary Verdict

The BIRKENSTOCK Cork Thong EVA A317 succeeds as a lightweight, waterproof thong with recognizable arch support. It fails as a long-term orthopedic sandal. Buy it as a secondary pair for wet environments or travel, but don't expect the same life span or support as the cork versions. The price is fair for what it delivers, but only if your needs align with its limitations.

This listing for BIRKENSTOCK Cork Thong EVA New Style Size 36-45 Flip Flops Thong Sandals A317 at BIRKENSTOCK Slip-on Sandals offers discreet shipping and clear product details for informed shopping.

This listing for BIRKENSTOCK Cork Thong EVA New Style Size 36-45 Flip Flops Thong Sandals A317 at BIRKENSTOCK Slip-on Sandals offers discreet shipping and clear product details for informed shopping.

This listing for BIRKENSTOCK Cork Thong EVA New Style Size 36-45 Flip Flops Thong Sandals A317 at BIRKENSTOCK Slip-on Sandals offers discreet shipping and clear product details for informed shopping.

This listing for BIRKENSTOCK Cork Thong EVA New Style Size 36-45 Flip Flops Thong Sandals A317 at BIRKENSTOCK Slip-on Sandals offers discreet shipping and clear product details for informed shopping.

This listing for BIRKENSTOCK Cork Thong EVA New Style Size 36-45 Flip Flops Thong Sandals A317 at BIRKENSTOCK Slip-on Sandals offers discreet shipping and clear product details for informed shopping.