Pre-Teen Clothes

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    "Tough enough for play. Soft enough for all day."

    Most kids' size 11 to 13 clothes fall into two categories: the cheap stuff that disintegrates after a few washes, or the pricey items that sit in the closet because they're uncomfortable. Our organic cotton kids' clothing collection is different. These pieces are soft enough for all-day wear, durable enough to survive active kids, and versatile enough to work for school days and weekends alike.

    View our size guide here

    30 products

    At Firebird Kids, we believe trendy kidswear should be more than just cute. Our pieces are thoughtfully designed to look great, feel amazing, and stand up to real-life wear.

    We specialize in cotton kids clothing made from premium organic materials—always soft on skin, easy to move in, and built to last.

    Looking for signature styles?

    Shop our denim
    Explore our knitwear

    Designed in San Francisco. Made in NYC. Always better than basic.

    The Firebird Difference

    Whether your child is heading to school, sports practice, or weekend adventures, our 6 to 13 kids collection offers the comfort and durability they need, without the high-maintenance care you don't have time for.

    • Machine washable: All of our boys' and girls' clothes, from cashmere knits and layering pieces to everyday basics, go straight into your regular wash cycle. No hand-washing, no fuss, no special care. For more information, refer to our easy cleaning guide.
    • Premium fabrics: We specialize in cotton kids' clothing made from premium organic materials: 100% GOTS-certified organic cotton, 100% organic Peruvian Pima cotton fleece, 100% organic Japanese cotton, and high-quality Italian French Terry.
    • PFAS-free clothing range: You'll never find toxic chemicals in our kids' outfits, including skirts, and pants. We ensure only the most sustainable fabrics touch your child's skin, making them perfect for sensitive skin.
    • Born in the USA: We love keeping things local! All of Firebird Kids' essentials are designed in San Francisco and manufactured in women-owned factories in NYC and LA.
    • Pass It On program: When clothes are outgrown, our resale program gives quality pieces a second life. Earn credit toward your next shop while reducing landfill waste.

    How To Build A Kids Capsule Wardrobe

    Building a kids' capsule wardrobe isn't about buying more; it's about choosing high-quality basics that mix and match to create multiple outfits from just several pieces.

    Here's a quick breakdown:

    • 4 comfy tees
    • 3 pairs of pants
    • 1 denim jacket
    • 1-2 sweaters or cardigans
    • 1-2 sweatshirts or cozy hoodies
    • 3 active wear outfits (leggings, joggers, sports gear)
    • 1-2 pairs of sneakers or boots
    • 1-2 pairs of sandals or flip-flops

    Looking For More?

    Stock your child's wardrobe with premium mix-and-match pieces. Whether it's hoodies, sweatshirts, or organic cotton tops, our durable range is built to last throughout the seasons, for your complete peace of mind.

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    FAQs

    Do you stock denim pants?

    Absolutely! We have a wide range of unisex denim pants for all ages on our website.

    How do Firebird Kids sizes 6 to 13 run?

    Our sizes align with standard kids' sizing, but since organic cotton can shrink 10-15%, we recommend sizing up if between sizes.

    How do I wash organic cotton kids' clothes?

    Here's a quick rundown on how to wash cotton kids' clothes:

    • Spot clean stains as soon as they happen to prevent permanent damage.
    • Use cold water (68°F or below) and a gentle machine cycle.
    • Use a mild laundry detergent and avoid bleach or ammonia-based products.
    • Air-dry clothes in a well-ventilated area, away from direct sunlight.

    Do you stock toddler clothes?

    Yes, browse our full 2T to 5T toddler clothing collection online today.