what does 5.5 y mean in shoe size

 

What is 5.5 Y?

The meaning of the number is "five and a half years". This can be used as a shoe size, which would be expressed as US size 10.5-Y. Sizes such as these are typically associated with infants or young children because they're not typically worn by adults.

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A size 10.5-Y would probably vary in fit between an adult's US size 9-10 and US size 11 shoes, depending on the brand of shoes made by that particular manufacturer.

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This size could be associated with someone who's between the ages of 5 ½ years and 6 years.

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An increased amount of growth can also be referenced by a larger number, such as 7.5 Y (seven and a half years). The same rules apply, where a 7.5-Y would range in size from a US women's size 9-10 to about 10 ½ for an adult's shoe.

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The "Y" suffix stands for "years". The purpose of the term is to differentiate sizes that are associated with infants and children from those associated with adults by using the "Y" suffix. This way, you won't mistakenly order shoes that aren't appropriate for your child or teen.

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A shoe size for an adult would be expressed as a number followed by an "M" ("medium") to represent that it's meant for an adult's foot, 

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instead of a child's foot. So, your infant might wear the number 5-Y (size 5 years) in children's shoes, and you might wear a US women's size 9-10 shoe and need to order a number 9 ½-M (size 9 ½ medium).

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Baby shoes are referred to as S or M on their labels. Toddler shoes are referred to as SM or MM. This is also done to differentiate between children and adults' sizes. The M or S is used for children and the SM or MM is used for adults.

Comparison of Shoe Sizes from Manufacturers

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You may also see sizes such as 23-Y (twenty-three years) printed on a shoe's box or label. The "Y" is meant to tell you that this shoe is designed for an infant or child, not an adult. It's not an age, but rather a size designation.

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You'll notice that some manufacturers may include the term "years" after the number on their labels, while others will not. 

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No matter which one they use, the shoes are still going to range in size from a toddler's size to an adult's size depending on the brand of shoe and how long it lasts before wearing out.

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The shoe sizes of a US size 5-Y to US size 9-10 for an adult woman will typically fit about the same as it would for an infant or youth.

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Shoe sizes will always be a mixture of letters and numbers, usually ranging from 1 to 15, depending on the shoe manufacturer's standards. 

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There are no general industry standards for what a number or letter represents in terms of length or width. Some manufacturers may use L to represent "wide", 

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while other manufacturers may use W (the letter), while still others may not use anything at all and let you determine if the shoe runs wide or narrow based on your foot's shape and size.

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