NB 373 Hook & Loop

“YV373” “SUSTAINABILITY PACK”, which uses eco-friendly recycled materials for the upper and is colored in matching colors for parent and child. The one-point 373 logo is placed on the heel and finished with a synthetic suede/mesh upper. Hook-and-loop fasteners and rubber shoelaces that are easy to put on and take off, and a sole unit with excellent cushioning and durability that can withstand long-term use, provide a comfortable fit.


NB 373 Hook & Loop


The retro 373 Hook & Loop for kids is a must-have for budding style seekers. This scaled-down favorite features classic NB colors for a standout look, and a flexible rubber outsole to help support growing feet on the playground and beyond. A hook-and-loop closure makes dressing quick and easy.

Product Feature

  • Hook-and-loop closure provides a secure fit that’s quick and easy to adjust
  • Synthetic/mesh upper
  • Lightweight EVA midsole provides flexible cushioning and absorbs impact
  • Durable rubber outsole
  • Traditional NB style based on adult versions of the shoe

Additional information


US1, US2, US3, USK11, USK12, USK13

Fitting Guide


How to measure your foot length

  • Stand with the heel to a wall and put a measuring tape under your feet
  • Read off the measured foot length in millimeters before your longest toe
  • If you are between two sizes, choose the next higher, because feet are minimally greater under load

You can also use our template:
Download the foot measurement template

Birkenstock products are offered in European sizes. Please reference our Size and Width conversion charts below to determine your SA/UK size.

Your feet should be able to move freely without your toes hitting the edge of the footbed.


Convert your SA/UK size

Fitting Guide – Birkenstock® South Africa


Before trying them on, put one hand under the toe and one under the heel, then flex the footbed a few times. This will initiate the break in period and will your help your new sandals feel comfy sooner.

Open all straps and step into the footbed. Close the straps comfortably, leaving enough space to allow your feet the freedom of movement. Exhale and enjoy.


For the first five or six times you wear your new footwear, limit the time to just a few hours. This allows your feet and body to gradually get used to the contoured arch support as well as the straps and buckles.

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