Adidas x LEGO® Sport Juniors Core Black FZ5438 UK 4.5

Adidas X Lego Sport

LEGO® Brick Torsion Architecture & Ocean-Bound Primeblue Yarn: The adidas x LEGO® Sport Kids "Core Black / Green / EQT Yellow" Equip young builders and aspiring track athletes with a performance-geared shoe that merges athletic engineering with the creative spirit of toy brick design. The FZ5438 casts the structured adidas x LEGO® Sport silhouette in a stealthy "Core Black" textile frame energized by high-contrast "Green" outsole tooling and vibrant "EQT Yellow" accents. Outfitted with traditional lace closure for junior runners seeking custom midfoot tension, this model integrates an authentic LEGO® brick-shaped Torsion bar and upcycled Parley Ocean Plastic to deliver structural arch support alongside sustainable construction.

Benefits: Engineered for track warm-ups, school gym sessions, recess games, and all-day active play, this shoe prioritizes midfoot integrity, heat ventilation, and impact protection. The traditional lace-up system gives older kids and junior runners full control over instep tension, ensuring a secure lockdown that eliminates internal foot slippage during sprints. Down below, the custom brick-shaped Torsion bar prevents arch twisting across uneven terrain, while the cushioned midsole softens hard ground contact on asphalt and sports hall floors.

Key Features:

• LEGO® Brick-Shaped Torsion Bar: Functional midfoot support bridge molded in the form of a classic building brick, delivering torsional rigidity for smooth, guided strides.

• Primeblue High-Performance Recycled Yarn: Upper textile crafted with 75% Primeblue yarn containing upcycled Parley Ocean Plastic intercepted from coastal beaches.

• Tactile 3D Brick Heel Counter: Textured external heel cup featuring molded LEGO® studs to stabilize the rearfoot and resist playground scuffs.

• Junior Performance Lace Closure: Traditional lacing layout providing an adjustable, snug athletic fit for older kids transitioning beyond slip-on straps.

• Multi-Directional Studded Rubber Outsole: Hard-wearing green rubber outsole molded with studded brick tread patterns for dependable traction across playgrounds and gym floors.

• Padded Textile Collar & Lining: Cushioned interior construction designed to minimize heel friction and keep feet comfortable through long school days.

Product Details:

• Product Name: adidas x LEGO® Sport Kids

• Silo: adidas x LEGO® Footwear Collection / Sport Series

• Category: Kids' / Juniors' Athletic Running & Active Lifestyle Footwear

• Colourway: Core Black / Green / EQT Yellow

• Style Code: FZ5438

• Upper Material: Breathable Textile with Molded LEGO® Overlays (75% Primeblue Yarn within Upper Textile)

• Lining: Soft Cushioned Textile Lining

• Stability Technology: LEGO® Brick Midfoot Torsion Bar & Molded TPU Heel Counter

• Midsole: Lightweight Cushioned Athletic Foam Midsole

• Outsole: Multi-Surface Solid Rubber Outsole with Raised Brick Tread Pattern

• Closure: Traditional Central Lace-Up System

• Fit: Regular Kids' / Juniors' Athletic Fit

Buyer Guidance & Fit Profile:

• Who This Product Is Best Suited For: Ideal for older kids, juniors, and young runners who prefer a true lace-up fit for school track days, PE lessons, and active playground games. Coordinates easily with black or heather grey athletic joggers, soccer training pants, school sports kits, and colorful graphic tees. Not intended for muddy, technical trail running or competitive long-distance road racing where specialized adult-grade carbon plates or deep lugged cleats are needed.

• Fit & Sizing Determination: Fits True to Size (TTS) in standard adidas kids' and junior footwear sizing. The structured textile upper and midfoot Torsion bar hold the foot securely in place, preventing forward slippage. If shopping ahead for an upcoming school term or to allow room for rapid growth spurts, selecting half a size up (0.5 size up) is recommended.

• Recommended Conditions & Activities: Optimised for school track running, gymnasium activities, playground sports, and dry outdoor casual wear. Care Recommendation: Clear small stones and dried dirt from the studded outsole grooves with a medium-stiff brush; spot clean the black textile upper and molded TPU heel cup using a damp microfiber cloth with lukewarm water and mild liquid detergent; avoid soaking in water or placing in a washing machine, as spin cycles degrade the adhesive bonding of the Torsion bridge and foam midsole; loosen the laces and allow to air dry naturally at room temperature away from direct sunlight or radiators.