How to Care for Kids' Waterproof Gear and Make It Last

Technical winter outerwear represents a significant investment in your child’s comfort and safety on the mountain. However, mud, slush, food spills, and sweat inevitably accumulate on kids' snowsuits and ski jackets over a long winter season.

Many parents hesitate to clean technical outerwear out of fear that machine washing will ruin the waterproofing. In reality, allowing dirt and body oils to build up actually damages waterproof membranes and degrades surface coatings faster than proper laundering. Learning how to wash kids waterproof ski jacket styles and maintain waterproof trousers ensures garments remain fully protective, breathable, and durable season after season.

1. Why Technical Outerwear Requires Specialized Care

Kids' waterproof snow wear relies on two distinct technologies working together:

1. The Internal Waterproof/Breathable Membrane: A microscopic barrier (such as TPE or polyurethane) laminated beneath the outer shell fabric. It contains pores tiny enough to block liquid water droplets from entering, but large enough to let sweat vapor escape.
2. Durable Water Repellent (DWR) Coating: A chemical finish applied to the exterior face fabric that causes liquid water to bead up and roll off.

When dirt, grease, and ground mud ground into the face fabric, they mask the DWR coating, causing the outer fabric to absorb surface water—a process known as "wetting out." While the internal membrane may still block water from reaching the child's skin, a wet-out outer layer blocks breathability, trapping internal sweat and making the jacket feel heavy and cold.

2. Pre-Wash Preparation Checklist

Before tossing ski pants or jackets into the washing machine, take a few minutes to prepare the garment to prevent physical abrasion or tearing during the cycle:

• Clear All Pockets: Check pass pockets, internal mesh pockets, and hand warmers for lift tickets, lip balm, or tissues.
• Close Fasteners: Zip up all front zippers, pocket zips, and pit vents. Fasten all Velcro wrist tabs and collar flaps. Loose Velcro acts like sandpaper during wash cycles, causing pilling and snagging on delicate technical fabrics.
• Unsnap Detachable Hoods: Wash detachable safety hoods alongside the jacket to ensure consistent fabric wear and DWR aging.
• Brush Off Caked Mud: Allow heavy dirt or slush mud along pant cuffs to dry completely, then gently brush it off with a soft-bristle brush before placing items in the wash.

3. Selecting the Proper Wash Cycle and Detergent

Knowing proper washing detergent for waterproof gear is essential for protecting technical membranes.

• Never Use Standard Household Detergent: Conventional powder or liquid laundry detergents contain aggressive surfactants, optical brighteners, and fragrances designed to bind to water. These additives leave sticky residues behind in microscopic membrane pores, destroying breathability and stripping the surface DWR treatment.
• Strictly Avoid Fabric Softeners & Bleach: Liquid fabric softeners coat fibers in a waterproof-repellent silicone film that clogs breathability completely and breaks down seam-taping adhesives.
• Use a Liquid Technical Cleaner: Choose a specialized non-detergent technical wash designed for waterproof outerwear (or a mild liquid detergent free of dyes, softeners, and enzymes, used sparingly).
• Machine Settings: Wash gear on a gentle/delicate cycle using warm or cold water (maximum 40°C / 104°F). Add a secondary rinse cycle to ensure every trace of cleaner is thoroughly flushed out of the fabric.

4. Re-Activating DWR Coating on Snowsuits and Jackets

After washing, technical outerwear needs heat to restore its surface water repellency. Modern fluorocarbon-free coatings, like BIONIC-FINISH® ECO used by brands such as Reima, rely on heat to re-align microscopic polymers on the fabric face.

Step-by-Step DWR Heat Reactivation:

1. Tumble Drying for Reactivation: Place the clean, damp garment in the tumble dryer on a low-to-medium heat cycle for 20 to 30 minutes. The gentle warmth reactivates the existing DWR treatment, causing water to bead up effectively on the next ski outing.
2. Ironing Alternative: If a tumble dryer is unavailable, place a clean towel over the dry outer shell fabric and iron on a low/synthetic heat setting (no steam) to reactivate the coating.
3. Re-Applying DWR Spray: Over time and after heavy use, DWR coatings eventually wear off around high-friction zones (knees, elbows, and inner ankles). Test the finish by sprinkling water drops onto the jacket face. If the water absorbs into the fabric instead of forming round beads, spray a fluorocarbon-free, wash-in or spray-on waterproofing reproofer evenly over the damp garment before drying.

5. Off-Season Storage Guidelines

Learning how to maintain Reima children's ski pants extends into how you store gear during the spring and summer months:

• Store Only When 100% Dry: Storing even slightly damp winter apparel in enclosed closets or plastic bins causes mildew growth, foul odors, and eventual delamination of waterproof seam tape.
• Avoid Hanging on Sharp Wire Hangers: Hang heavy winter coats on wide, padded or thick plastic hangers to maintain shoulder structure without stretching or stressing upper seams.
• Keep Out of Direct Sunlight: Store garments in a cool, dark, dry closet. Long-term exposure to direct sunlight and UV radiation degrades nylon face fabrics and weakens internal laminate backings over time.

Summary Maintenance Checklist

Follow these simple rules whenever it is time to clean your child's winter apparel:

1. Zip all zippers, secure Velcro tabs, and brush off dry mud before washing.
2. Wash with specialized technical cleaner—never use standard detergent, bleach, or liquid fabric softener.
3. Run an extra rinse cycle to remove all residual soap.
4. Tumble dry on low heat for 20–30 minutes to reactivate the surface DWR water-beading finish.
5. Test water-beading performance and re-spray with a PFAS-free proofing spray when necessary.