What is 1T Size? Understanding the Meaning and Significance

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If you’re a parent who’s ever come across the size 1T on a baby clothing chart, you may be wondering what it means and how it differs from the more commonly found 12-month size. As a Ph.D. researcher and mom, I’ve personally encountered this issue while shopping for my own children. In this article, I’ll share my research findings on 1T size and offer some guidance on when to consider purchasing it.

While 12-month clothes may seem like they would be equivalent to 1T since 12 months is technically one year, there are distinct differences between the two sizes. In this article, I’ll break down these differences and also discuss the similarities and differences between 1T and 18-month sizes. Additionally, I’ll provide some tips on where you can find 1T clothing and when it may be appropriate to purchase it.

Key Takeaways

  • 1T is a rarely seen size in baby clothing and is distinct from the more common 12-month size.
  • While 12-month clothes are designed for babies up to one year old, 1T clothing is typically designed for toddlers who are just starting to walk.
  • When shopping for baby clothes, it’s important to pay attention to the size chart and consider your child’s age, height, and weight to ensure the best fit.

What is 1T size?

1T is a toddler clothing size for babies who are approximately one year old. Toddler sizing is different from baby sizes and is designed for babies who are more mobile or walking. These clothes allow for more mobility for babies that are now on the move. The sizing is not similar to the baby’s size because these clothes are designed for babies who can walk around.

In early toddler sizes, the toddler-size indication may also be used to differentiate clothes for those children who are potty trained and out of diapers. Once a child is out of diapers, they can wear bottoms that are trimmer fit since they don’t need to accommodate diaper bulkiness. They also don’t have to have waistbands that are easy to pull on and off for diaper changes.

You may also see 1T pop up in range sizes like 1T-3T, which indicates the item is designed for toddlers between the ages of one and three. These 1T range sizes are commonly found when shopping for toddler socks.

It’s important to note that once you get into bigger sizes like 4T vs. 4, the toddler designation differentiates from “big kid” size clothes and usually indicates they are designed for a child possibly still in diapers.

What is 12 Month Size?

12 month size is a clothing size designed for babies around 1 year old, with a height of approximately 28.5 – 30″ and a weight of 21 – 25lb (source: Carter’s sizing chart). This size falls under the category of baby clothing sizes, which are designed to be easy to put on and take off, with extra space for the bulk of diapers. Baby sizes assume that your child is still in diapers and may be designed with limited mobility in mind, as well as the period where they are learning to walk.

You’ll find a bigger selection of onesies and footed pajamas in baby sizes. Head holes are usually bigger on baby clothes so that onesies can be pulled down off the body. Baby sizes may also have fewer buttons, snaps, and zippers to make it easier for parents to dress their children.

In summary, 12 month size is a baby clothing size designed for babies around 1 year old, with extra space for diapers, limited mobility, and easy dressing.

What is 18 Month Size?

18-month size is a clothing size designed for the average 18-month-old baby. At Carter’s, a major U.S. baby clothing brand, 18M clothes are made to fit babies weighing between 25-28 lbs and measuring 30-32″ inches long. Like 12-month sized clothes, 18-month clothes are often made for babies in diapers and those learning to walk. For example, footed pajamas in 18-month size may include grippers on the feet to help prevent slips and falls. It’s important to note that sizing may vary between brands, so it’s always a good idea to consult the brand’s sizing guide before making a purchase.

What are the differences between 1T vs. 12m clothing?

When it comes to 1T vs. 12m clothing sizes, the main difference is that 12-month size is much more common than 1T size. Most major brands have a 12m size, while 1T size is only occasionally seen. In situations where both 1T and 12m sizes are available, it helps to think of the differences between 1T vs. 12-month like you would the more commonly seen 24-month vs. 2T size overlap.

The assumption is that the baby wearing 1T is mobile and possibly out of diapers. 1T is likely to fit a little longer and leaner than 12-month size. However, always double-check size charts because sizing varies a lot by brand.

In terms of clothing design, clothes designed for babies like 12-month sized items are made to be able to dress a baby easily, who may not be walking or who needs frequent diaper changes. You’ll also see tops with head holes that allow you to take them off both up and down the body. In comparison, some toddler clothes assume a mobile baby who may even be potty trained. They can be more like little kids’ clothes without the extra baby accommodations like flexible neck holes and diaper space.

Another slight difference is that 1T is made for mobile children, while the 12-month size is better for crawling babies. However, 1T generally allows room for a diaper since most 1-year-olds aren’t potty trained.

Expect minimal differences between 1T vs. 12 months clothing. 1T may have less diaper room and may be a little bit longer and bigger overall, and probably will have fewer baby features like flaps and snaps to access the diaper area. But otherwise, these sizes are similar. When in doubt, buy big as kids grow fast.

The table below shows a comparison of 1T vs. 12m clothing sizes:

Clothing Size Comfort Diaper Room Mobility Crawling Movement Child’s Weight Child’s Height
1T Less diaper room, may be longer and bigger overall, fewer baby features like flaps and snaps to access the diaper area Allows room for a diaper, made for mobile children Made for mobile children 20-28 lbs 28-32 inches
12m More diaper room, designed for easy dressing and frequent diaper changes Designed for easy crawling Designed for non-mobile babies Designed for crawling babies Designed for non-mobile babies 17-22 lbs 27-29 inches

Remember to always double-check the size charts and take into account your child’s weight and height when deciding between 1T vs. 12m clothing sizes.

What are the differences between 1T vs. 18-month clothing?

When it comes to 1T vs. 18-month size clothes, the main difference is the size of the clothing. 18-month size clothes are designed to fit one-and-a-half-year-olds, while 1T clothes are suitable for babies around their 1st birthday. Since babies grow a lot in their early days, 18-month old babies are generally larger than one-year-old babies.

If you are unsure which size to choose, it’s recommended to size up and go for the 18-month size. This will ensure that the clothing is comfortable and doesn’t leave red marks on the baby’s skin. Additionally, 18-month size clothing is less bulky than diaper sizes, making diaper changes easier. Moreover, 1T clothing is designed for mobile children who are walking, while 18-month size clothing is better for babies who are potty trained.

In summary, when choosing between 1T vs. 18-month size clothing, it’s essential to consider your baby’s age, mobility, and comfort.

Where Can You Find 1T Clothes?

If you are looking for 1T clothes, you may have a hard time finding them at most U.S. retailers. However, you can find some 1T size options on select Amazon and Etsy listings. For example, you can check out this 1T-sized item or this 1T vs. 12-month clothes guide on shoestring baby and revivebaby respectively.

In addition, you may come across 1T range sizes, such as this 1T-3T size from a Poshmark listing. This range size indicates that the item may fit a toddler between the age of one and two (2T) or three (3T) years old.

For toddler socks, you may find 1T size or 1T range sizes, such as these socks on Amazon.

However, major baby clothing brands like Carter’s, Old Navy, Gerber, and Children’s Place do not offer 1T size. Instead, their sizes go 12-month, 18-month, 24-month, and 2T. You can refer to their size charts to find the right size for your little one. 2T is the first true toddler size available in these popular brand-name baby clothes.

In summary, if you are looking for 1T clothes, you may need to shop around and look for specialty retailers or online marketplaces. Keep in mind the range sizes and specific measurements when shopping for baby clothes, toddler clothes, or kids clothes.

Conclusion: When Should You Buy 1T Baby Clothes?

If you are shopping for baby clothes and come across the 1T size, you may be wondering if it’s the right size for your little one. Based on our research, 1T is a size that is infrequently used for babies around 1-year old. It is typically equivalent to the 12-month size, so if you cannot find 12-month clothes, you can safely assume that 1T clothes would fit a baby wearing other 12-month clothes.

However, if you do find a listing with both 1T and 12-month sizes available, it may indicate that the 1T size is designed for more mobile babies and possibly cut longer and leaner for less diaper space. It is advisable to check the size chart since sizing varies a lot by brand.

When deciding between 1T vs. 12-month or 18-month size, we recommend sizing up to the 18-month size. Babies grow so fast that they’ll be in the larger size before you know it, and you’ll get more wear time out of the clothes. It’s one of our tips to save money on baby and toddler clothes.

When it comes to fit, remember that baby clothing sizes are just a number, and your baby may be wearing multiple sizes like 1T, 12m, and 18m all at the same time. Pay more attention to fit than the size on the tag.

It’s also important to note that different brands have different sizing, and some may use European sizing or UK sizes instead of the typical US sizes. It’s always a good idea to check the size chart before making a purchase.

When it comes to fastenings, elastic waistbands, buttons, ties, and snaps are all practical and easy to use. Footed pajamas are also a popular choice for their warmth and convenience. Pants, dresses, shorts, leggings, onesies, shirts, sweaters, and tops are all great options for both practical and active wear.

In conclusion, if you come across the 1T size while shopping for baby clothes, it is typically equivalent to the 12-month size. However, it’s always a good idea to check the size chart since sizing varies by brand. Sizing up to the 18-month size is recommended to get more wear time out of the clothes. And remember, fit is more important than the size on the tag.

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