Please use your little bees Weight AND Height to determine size
Weight
Height
Get This Size
6-9 lbs
up to 21.5"
Newborn (NB)
9-12.5 lbs
21.5 - 24"
0 to 3 months (3M)
12.5 - 17 lbs
24 - 26.5"
3 to 6 months (6M)
17 - 21 lbs
up to 28.5"
6 to 9 months (9M)
21 - 25 lbs
28.5 to 30.5"
12 Months (12M)
25- 28 lbs
30.5 to 32.5"
18 Months (18M)
28 - 30 lbs
32.5 to 34"
24 Months (24M)
29 - 31 lbs
35 to 36.5"
2 Toddler (2T)
31 - 33 lbs
36.5 to 39"
3 Toddler (3T)
34 - 37.5 lbs
39 to 41.5"
4 Toddler (4T)
37.5 - 42 lbs
41.5 to 44"
5 Toddler (5T)
38.5 - 48 lbs
42.5 to 47.5"
6 Years (6Y)
59.5 - 69.5 lbs
50.5 to 53.5"
8 Years (8Y)
69.5 - 87 lbs
54 to 56"
10 Years (10Y)
87 - 101 lbs
58 to 60"
12 Years (12Y)
product
https://www.burtsbeesbaby.com/under-the-sea-organic-cotton-baby-pajamas152094Under The Sea Organic Cotton Baby Pajamashttps://www.burtsbeesbaby.com/media/catalog/product/L/Y/LY31778-BHZ-Under-The-Sea-Short-PJ-Set.jpg14.9514.95USDInStock/new & trending/pajamas/summer/pajamas/baby (0-24M)/2-piece snug fit/pajamas/baby (0-24M)/new & trending/new pajamas/pajamas/pajamas/baby (0-24M)/boy/pajamas/organic cotton pajamas858165716481639943162047222712161639858Award winning, GOTS certified, breathable pajamas. Soft & durable, made with organic cotton <p>Summer awaits! The best new watercolor prints in the comfiest pajamas!</p><ul><li>Available in sizes from Newborn through 12Y</li><li>Hand painted watercolor prints</li><li>Made with the purest layer™ organic, GOTS certified, breathable cotton. Great for sensitive skin!</li><li>Made in India</li></ul><p><strong>SLEEP & PLAY (NB-9M)</strong></p><ul><li>Relaxed and roomy fit</li><li>Snap tab at neckline</li><li>Zip front with two way zipper</li><li>Hidden zipper, and interior zipper guard</li><li>No-scratch convertible mittens on newborn & 0-3M sizes</li><li>Footless sleep & play for warmer months</li></ul><p><strong>SLEEPER (12-24M)</strong></p><ul><li>Slim and snug fit following regulated safety standards</li><li>Extra stretch on wrist cuffs for a comfortable fit</li><li>Snap tab at neckline to keep curious hands from pulling on zipper</li><li>Footless sleeper for warmer months</li><li>Two way zipper for easy diaper changes</li><li>100% Organic Cotton</li></ul><p><strong>BABY, TODDLER, BIG KIDS 2 PIECE PAJAMAS (12M to 12Y)</strong></p><ul><li>Short sleeve & shorts for warmer weather</li><li>Encased elastic waistband</li></ul>00https://www.burtsbeesbaby.com/media/catalog/product/L/Y/LY31778-BHZ-Under-The-Sea-Short-PJ-Set-Back.jpghttps://www.burtsbeesbaby.com/media/catalog/product/L/Y/LY_TD_KD31776-BHZ-Under-The-Sea-Footless-Sleep-and-Play-Back-Swatch.jpghttps://www.burtsbeesbaby.com/media/catalog/product/T/D/TD31778-ALT1.jpghttps://www.burtsbeesbaby.com/media/catalog/product/L/Y/LY31776-ALT1.jpghttps://www.burtsbeesbaby.com/media/catalog/product/T/D/TD31778-ALT2.jpghttps://www.burtsbeesbaby.com/media/catalog/product/L/Y/LY31776-ALT2.jpghttps://www.burtsbeesbaby.com/media/catalog/product/T/D/TD31778-ALT3.jpghttps://www.burtsbeesbaby.com/media/catalog/product/L/Y/LY31776-ALT3.jpgseason:Summer 2025gender:Boysku:LY31778154584Under The Sea Organic Cotton Baby Pajamas - 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