Trek Ultra is an ideal form of mosquito protection for travel to tropical and sub-tropical parts of the world. It contains 30% DEET and features time release technology which gives a sustained and slow release of repellent throughout the day, meaning the need for reapplication is less frequent. Suitable for children age 2+. Apply once for all day protection up to 12 hours. Ideal mosquito / insect repellent for families including young children. Time release technology ensures up to 12 hours' protection from one repellent application Protects against insect borne diseases such as Malaria, Dengue Fever, Zika Virus etc. The Trek Ultra Repellent is formulated for tropical conditions, such as jungle terrain, protecting travellers from insect-borne diseases. Strong and effective, this repellent with 30% DEET is sweat and splash-resistant and it will last all day. Effective - 30% DEET based insect repellent with time release technology. Protection against tropical diseases, such as malaria, dengue fever and West Nile virus Fully approved in the UK