Yumi: Try Contact Lenses For Free * One trial per person.  * Eye test not included.  * Valid prescription required.  * Offer available in store only.  * Includes sample pack to try at home, subject to availability.  * Excludes colour, myopia management, made-to-order, gas permeable or hard lenses.  * For full Terms & Conditions, please visit the Specsavers’s website.