Interchangable Thongs

Willi Footwear

Huntington - Tortoise Aqua Sea, by South Cali Sunnies

Huntington - Tortoise Aqua Sea, by South Cali Sunnies
Huntington - Tortoise Aqua Sea, by South Cali Sunnies Huntington - Tortoise Aqua Sea, by South Cali Sunnies Huntington - Tortoise Aqua Sea, by South Cali Sunnies
5 Star Reviews

AUD $49.95

  • Frame: Tortoise / Bamboo
  • Lens: Aqua Sea
  • Protection: UV400 - FDA approved impact resistant
  • Hinge: Metal
  • Unisex
  • Dimensions: 5.5 inch (front), 1.9 inch (tall), 5.5 inch (arms)
  • Package: Each pair of sunglasses comes with a microfibre pouch for protection and cleaning
  • Please note: Sunglasses will be shipped EXPRESS from a different warehouse and might not arrive at the same time as other products ordered from our website. You will not be charged extra for shipping  :)

Huntington Beach (lovingly known as “HB’s”) is the authentic surf lifestyle of the US. Coupled with 10 miles of uninterrupted coastline, warm weather and year-round sun, it offers the perfect setting for outdoor activities such as beach bonfres, volleyball by the Pier, biking along the Ocean Strand, stand-up paddle boarding in Huntington Harbour, hiking through the Bolsa Chica Wetlands or strolling down Main Street making this name perfect for our newest style!

Boomerangz – Interchangeable thong range – Sizes & Colours Video

Our patented range of thongs / flip flops is interchangeable which means you can mix and match your bases and straps in less than 30 seconds – no tools, no fuss! Different coloured bases and different coloured straps allows for multiple colour combinations.


Although the thongs may vary a few millimetres it is best to measure your foot or a pair of old thongs from the centre of the heel to the top of your big toe.

Please always check your size before ordering as you will incur postage fees should you need to swap for a different size.

The Boomerangz size range is based on the MENS US size range. Although they are unisex – This means that if you are ordering a ladies slim style and you are normally a 9, you will need to order a 7/8 instead. If you are normally a 7/8, you will need to order a 6 and so on… best to measure your foot with the sizing charts below   🙂

  1. Click on the link below of your desired size
  2. The PDF will open in a new window
  3. Click FILE then click PRINT
  4. Make sure PAGE SCALING is set to NONE
  5. Place your foot in the outline to see if that is your correct size
  • US Slim 4/5             |   235mm   |   Ladies – XS
  • US Slim 6                 |   247mm   |   Ladies – S
  • US Slim 7/8             |   260mm   |   Ladies – M
  • US Slim 9                 |   272mm   |   Ladies – L
  • US Regular 7/8       |   260mm   |   Men’s – XS
  • US Regular 9           |   272mm   |   Men’s – S
  • US Regular 10/11   |   286mm   |   Men’s – M
  • US Regular 12         |   298mm   |   Men’s – L
  • US Regular 13/14   |   308mm   |   Men’s – XL


All Willi Footwear orders are sent via Australia Post.

All orders are registered and come with a tracking number.

Depending on your location, Standard Post will usually take 2-5 days.
Express Post will usually take 1-2 days.
Remote areas may take longer.

  • Orders $0 – $60 = $8.95 – Standard Trackable Delivery
  • Orders $0 – $60 = $12.95 – Express Trackable Delivery
  • Orders $60 and over = FREE EXPRESS Delivery – Express & Trackable

Partner company products may be sent with a different postal or courier service.

Coming soon…