We have these pajamas in several colors and when our daughter runs out of size we just buy more in the next size up. They're soft and stretchy, seem to grow with your baby and last a long time, and they're not too warm, which is great because we live in a warm climate.
π Mud Kingdom Toddler Collar Pajama: Stylish Boys' Clothing for Comfortable Nights
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Enfants ChΓ©ris Toddler Pajamas: Warm Cotton Pjs for 24M-6 Year Old Girls Boys
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Simple Joys by Carter's Baby and Toddler Boys' 3-Pack Footed Pajamas - Loose Fit & Polyester Jersey Material
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Amazon Essentials Snug Fit Pajamas - Stylish Boys' Sleepwear & Robes Collection
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π Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
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π₯ Stay Warm and Active with Rocky Fleece Thermal Underwear Bottoms for Boys
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Arctix Youth Pants Reinforced: Large Boys' Clothing for Active Adventures
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Funny Guy Mugs Tearaway Sweatpants: Playful Boys' Clothing for Fun and Active Days
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