primary
underwear
| Size | Height (in) | Weight (lb) |
|---|---|---|
| 2-3 | 33-38 | 30-36 |
| 4-5 | 38-44 | 36-46 |
| 6-7 | 44-50 | 46-60 |
| 8-9 | 50-53 | 60-71 |
| 10 | 53-56 | 72-83 |
| 12 | 56-59 | 84-95 |
| 14 | 59-62 | 96-107 |
All Sizes in Inches Unless Otherwise Stated
Primary kids Boxer Brief 7-Pack in Rainbow Mix Size 4-5
$64.50
In Stock
Eligible for registries and wish lists
Fit & style
- Fabric: 95% cotton, 5% spandex
- Fit: Snug but comfy fit
- Features: Smooth, flat seams and no-roll waistband
- Care: Machine wash, tumble dry
About this item
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4.9 out of 5 stars with 37 reviews
5 out of 5 stars
26 December, 2025
originally posted on Primary
Super comfortable underwear
We have s very skinny 5yo who had sensitive skin and still runs through underwear rather quickly. Finding him comfortable options has been hard, but he loves these.
5 out of 5 stars
9 December, 2025
originally posted on Primary
My kid is obsessed...
My son wanted to try boxer briefs, and these are a winner! He loves the colors, they are super comfortable, and they look cute too! Now he doesn't want to wear anything else. I know another purchase is in our future!
5 out of 5 stars
11 November, 2025
originally posted on Primary
Solid basics!
These seem great-based on laundry my kids seems to gravitate towards these rather than other pairs!
5 out of 5 stars
20 September, 2025
originally posted on Primary
Soft Undies for Big Kids
Great undies for my 10 year old son. They are very comfy and soft. I think they run a tiny bit small.
5 out of 5 stars
9 August, 2025
originally posted on Primary
Our standard wardrobe set
Love the solid colors. Would happily pay a bit more if they are organic cotton.
5 out of 5 stars
2 August, 2025
originally posted on Primary
Best undies!
Of all the boxer briefs my son has tried over the years, these are by far the best. Not too tight, not too loose. Simple colors.
5 out of 5 stars
1 August, 2025
originally posted on Primary
Soft and fits great
Really soft boxer briefs, we’ve used these for years and worth the high price tag (I wait for sales). They last a long time, he grows out of them without them fraying or the elastic getting loose. My one con is Primary is known for their tagless clothing. All underwear have a small tag on the side showing the date they were manufactured, and it’s not easy to get off.
5 out of 5 stars
28 July, 2025
originally posted on Primary
Great for a skinny little guy
Have a SUPER skinny, tiny little guy and these are some of the best fitting boxers we have found!! Very soft and comfy for him!!
5 out of 5 stars
18 June, 2025
originally posted on Primary
Comfort
Super comfortable. My kid won’t wear anything else
5 out of 5 stars
5 February, 2025
originally posted on Primary
Undies
Great product. The cotton is soft and no labels to scratch. The colors are pleasing!
5 out of 5 stars
13 December, 2024
originally posted on Primary
Great undies
Love the colors! My kid loves primary's underwear and they hold up super well
3 out of 5 stars
7 December, 2024
originally posted on Primary
Boxer 7-pack
love the colors. Since a Xmas gift, I cannot comment on the fit at this time. However, I also bought sunshine yellow hooded zip in Size 5-Toddler. Arrived but has 3 stains on the side. Very disappointed as this color is one of my grandson's favorite!
5 out of 5 stars
3 November, 2024
originally posted on Primary
Best undies ever!
Bought for grandsons who like these over any other underwear they have had. They wear the same size and divided them up themselves. They take turns with the "weird one"-for some reason they think it's so funny that there is and a gray pair!
5 out of 5 stars
26 October, 2024
originally posted on Primary
Well Made
Great quality
5 out of 5 stars
16 September, 2024
originally posted on Primary
My son loves
These are his first boxer-briefs (to be like daddy) and after a day adjustment, he loves them. Very soft and well made. They will last through washes, I can tell
5 out of 5 stars
25 August, 2024
originally posted on Primary
Great Boxers
My son loves these boxers. The colors are fun and they are very comfortable.