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The Happy Socks Filled Optic FIO01 is a bold, eye-catching design that brings playful geometry and vibrant colour to your everyday look. Featuring striking optical patterns that seem to dance with every step, these socks are perfect for anyone who loves to make a statement from the ground up.
Whether you’re heading to work, hanging out with friends, or just adding a pop of fun to your outfit, the Filled Optic design turns ordinary socks into a style conversation starter. Bright, dynamic, and full of personality, they’re the perfect way to express your playful side.
Made from a soft and breathable combed cotton blend, they keep your feet comfortable all day long. Reinforced heels and toes provide durability, while the stretchy elastic cuff ensures a snug, secure fit that stays in place.
Bold, optical-inspired pattern
Soft combed cotton blend (86% Cotton, 12% Polyamide, 2% Elastane)
Reinforced heel & toe for long-lasting wear
Comfortable stretch fit for all-day comfort
Perfect for adding colour and playful style to your wardrobe
Our delivery costs per region are as follows:
UK
Up to £90 - £3.50
Over £90 - FREE
EU
Up to £199 - £12.00
Over £199 - FREE
EXPRESS - £16.50
NON-EU
Up to £199 - £15.00
Over £199 - FREE
EXPRESS - £20.00
We want you to be 100% delighted with your purchase from Robinson’s Shoes. On the rare occasion where you might need to return your item(s), here are our simple returns policy notes. These terms do not affect your statutory rights.
Online purchases must be returned by post with the completed returns slip provided included with your item(s). You can also drop off online returns to one of our stores; please package the returns form along with the item(s). Items purchased online and returned in-store will be processed as per our online returns policy. In-store purchases must be returned to the store you originally made the purchase from.
The customer accepts responsibility for the returned goods until they reach us. For online purchases, we suggest you use a secure delivery method, which requires a signature upon delivery, such as Royal Mail First Class (Recorded Delivery). In cases where a returned item(s) is damaged in transit to us or the item(s) fails to reach us, a refund or replacement will not be issued.
Further details are available here.