Boys 12Y

This XL-knit sweater from The Harbour School collection is perfect for tweens, featuring classic navy and white stripes, ideal for a sustainable an...

Stay cozy and stylish this fall and winter with The Harbour School's neutral hooded sweatshirt, perfect for any kid. Featuring a striking navy blue...

This vibrant blue V-neck active top from The Harbour School is perfect for any activity, featuring a wave-like design that adds a fun touch for you...

This vibrant red, long sleeve, gender-neutral tee by The Harbour School is perfect for the fall and winter season. Designed for comfort and style, ...

Elevate your kid's wardrobe with this stylish long-sleeve shirt from The Harbour School's Fall/Winter collection, perfect for adding a touch of sop...

Make waves in sustainable style with this preloved The Harbour School short sleeve polo, perfect for any kid aged 4 years. Featuring a refreshing b...

This vibrant short sleeve polo from The Harbour School, perfect for spring and summer, features a stylish wave pattern and bright red buttons, maki...

This classic white Petit Bateau short sleeve bodysuit in size 12Y for tweens combines timeless style with comfort, perfect for versatile everyday w...

Elevate your tween's wardrobe with this Under Armour hooded sweatshirt, featuring a striking red and black design and the iconic logo, perfect for ...

Elevate your tween's activewear collection with this Nike Active Top, featuring a bold camouflage pattern in versatile all-season design. Perfect f...

Elevate your tween's wardrobe with this HEAD Fall/Winter hooded sweatshirt, featuring a striking orange crackle pattern and soft, dark sleeves, per...

Elevate your tween's active wardrobe with these Under Armour Project Rock active shorts, featuring a breathable navy design perfect for all seasons...

Elevate your teen's athletic style with these Nike active shorts, perfectly designed for all-season comfort and performance. Crafted from durable, ...

Elevate your tween's wardrobe with this preloved Nike short sleeve t-shirt in size 12Y, featuring a stylish designer logo on a versatile olive gree...

Elevate your tween's activewear collection with these sleek Adidas active pants in size 12Y, featuring bold graphics and a comfortable fit perfect ...

Elevate your teen's athletic wardrobe with these preloved Nike active shorts, perfect for outdoor adventures or gym sessions, designed for ultimate...

Elevate your tween's style with this Crewcuts long sleeve checkered shirt, perfect for special occasions, blending classic design with sustainable ...

Elevate your tween's wardrobe with this preloved Adidas crewneck sweatshirt, featuring a bold blue hue and iconic logo design, perfect for sustaina...

Elevate your tween's wardrobe with this Freedomday lightweight jacket, featuring a vibrant Fairytale pattern that beautifully captures scenic lands...

Elevate your tween's wardrobe with this elegant Trussardi long sleeve shirt, perfect for special occasions. Designed with a subtle striped pattern,...

This Crewcuts long sleeve top for tweens features a vibrant blue front and contrasting dark sleeves with sporty white stripes, perfect for adding s...

Discover comfort and style with these preloved Mini Mioche leggings for tweens, designed for a perfect fit without compromising on sustainability, ...

Elevate your tween's wardrobe with this sophisticated Prada blazer, featuring a sleek design with bold red accents, perfect for any special occasio...

Keep your tween stylish and comfortable with this preloved Fila lightweight camo jacket, perfect for layering during cooler seasons. Promoting circ...

Elevate your tween's wardrobe with this Double B Mikihouse long sleeve T-shirt, featuring playful stripe sleeves and a vibrant design that keeps th...

This Aletta long sleeve striped shirt for tween boys, available in size 12Y, is perfect for any occasion, combining elegance with sustainable fashi...

Discover these timeless Crewcuts casual pants for tweens, featuring a classic navy blue color perfect for any occasion. Crafted for comfort and sty...

Elevate your tween's wardrobe with these comfortable, preloved Crewcuts casual pants, perfect for any occasion. Crafted for boys in size 12Y, they ...

Elevate your tween's wardrobe with this preloved Polo Ralph Lauren short sleeve polo, featuring a classic striped pattern in vibrant shades and des...

Keep your tween cozy and stylish with this classic Polo Ralph Lauren navy knit sweater, perfect for cold weather and sustainable circular fashion.C...

Rev up your tween's style with this striking red Ferrari crewneck sweatshirt, featuring a stylish chest pocket, perfect for adding flair to any cas...

Elevate your tween's style with this black Under Armour crewneck sweatshirt, featuring unique patches for a fun and sporty look, perfect for both c...

Elevate your tween's style with this Stella McCartney lightweight jacket, featuring a bold graphic design with vibrant accents and crafted for comf...

Elevate your tween's wardrobe with this Stella McCartney lightweight jacket, featuring vibrant logo detailing and a striking green zipper for a coo...

Discover sustainable style with this neutral Nicholas & Bears lightweight jacket, designed for tweens size 12Y. Perfect for adding a touch of c...

This Petit Bateau neutral long sleeve T-shirt in size 12Y offers timeless style and comfort for your tween, crafted from high-quality materials for...

These versatile Petit Bateau casual pants for tweens feature a charming animal pattern, perfect for all seasons and ideal for environmentally-consc...

Discover sustainable fashion with this charming Petit Bateau long sleeve top in size 12Y, featuring a delightful animal pattern, perfect for your t...

These Nike sneakers in size EU37 offer a vibrant and stylish look with their bold color accents and unique design, perfect for active tweens. Enjoy...

Step up your game with these preloved Adidas soccer cleats in EU38, featuring vibrant colors and a durable design. Perfect for eco-conscious teens ...

Elevate your tween's wardrobe with this preloved MSGM long sleeve shirt for boys, featuring a classic plaid design in versatile shades of blue and ...

Explore effortless style with this Crewcuts long sleeve t-shirt, perfect for teens. Made with comfort in mind, this preloved top features a scenic ...

Elevate your tween's wardrobe with these Junior Gaultier casual pants in size 12Y, featuring a striking blue hue with bold striped patterns for a s...

Elevate your tween's wardrobe with this classic Tommy Hilfiger long sleeve shirt, featuring a crisp white design and iconic logo embroidery perfect...

Elevate your tween’s wardrobe with these preloved Fendi shorts, designed for boys in a versatile black hue, perfect for promoting sustainable fashi...

Elevate your tween's wardrobe with this preloved Bonpoint short sleeve polo, featuring a subtle gradient design that effortlessly combines style an...

Discover sustainable style with these neutral Polo Ralph Lauren sweatpants, perfect for tweens. Crafted from soft, preloved fabric in a versatile g...