The O'Neill Girl's Epic 4/3mm is built to keep young surfers in the water through the coldest months of the year. Carrying the same proven Epic construction as the men's lineup — Wind-Proof Smoothskin, FluidFlex Firewall lining, and GBS seams — in a youth girls-specific cut designed for the proportions and fit needs of developing surfers.

Wind-Proof Smoothskin panels across the chest minimize heat loss during lineup waits and paddle-outs, while FluidFlex Firewall neoprene delivers consistent thermal performance across core panels. UltraFlex neoprene throughout the arms and legs keeps the suit flexible and easy to move in, even as neoprene thickness increases for cold-water conditions. GBS (Glued and Blind Stitched) seams seal against water penetration and the Minimal Seam design reduces unnecessary bulk. A Double Super Seal collar locks out neck flush, Hand-Cuff Stitch Sleeve Anchors keep wrist seals from riding up, and Krypto Armor knee reinforcement extends the suit's durability against board contact. Recommended for water temps in the 50–60°F range.

• Cut: Youth girls-specific fit and proportions
• Outer Panels: Wind-Proof Smoothskin on chest for heat retention
• Thermal Lining: FluidFlex Firewall neoprene across core panels
• Neoprene: UltraFlex high-stretch neoprene in arms and legs
• Seams: GBS (Glued and Blind Stitched) with Minimal Seam design
• Closure: Back zip with Double Super Seal collar
• Fit Details: Hand-Cuff Stitch Sleeve Anchor to prevent sleeve ride-up
• Durability: Krypto Armor reinforced knee panels
• Water Temp: Recommended for 50–60°F (cold water, fall/winter)

Sizing: O'Neill youth wetsuits are sized by height and weight. Refer to the O'Neill youth size chart before ordering. A proper wetsuit fit should feel snug but not restrictive — the suit should have no large air pockets but should allow full arm and shoulder rotation. When in doubt, size up.

Care: Rinse thoroughly with fresh water after each use. Hang to dry inside-out away from direct sunlight. Do not machine wash, tumble dry, or use hot water. Store flat or on a wide hanger to preserve neoprene shape.