Superhydrophobic coating comprising an outer surface for which a drop of water (10 μl) placed on this outer surface in a horizontal position defines a static receding contact angle of more than 135 ° and/or a static advancing contact angle of more than 135 °, the said coating comprising at least one outer layer with a thickness of less than 500μm obtainable, in particular obtained by applying on a support at least one fresh acid suspension consisting of at least 97% by weight by: - solid particles with a particle size of less than 500 μm, advantageously less than 300 μm, said solid particles consisting of more than 80% by weight, advantageously more than 85% by weight, preferably more than 90% by weight of agglomerates of SiO 2 primary nanoparticles, the SiO 2 primary nanoparticles of said agglomerates having a number average particle size of less than 70 nm, advantageously less than 60 nm, preferably less than 50 nm, said SiO 2 particle agglomerates and/or SiO 2 nanoparticles thereof being functionalized with groups selected from the group consisting of dimethyloxy, trimethyloxy and their mixture in order to have a relative residual content of SiOH group between 40% and 60% of the SiOH residual content of pyrogenic silica particle containing about 2 SiOH groups per nm 2, said particles representing from 0.6% to 6% by weight, preferably from 1% to 6% by weight, preferably from 2% to 4% by weight of the suspension; - an alcohol or a mixture of alcohols, said alcohol or said alcohols advantageously comprising 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, - TEOS representing 2 to 20% by weight, in particular of 3 to 15% by weight of the suspension, - an acid, and - water; said fresh acid suspension being applied on a support to form the coating less than 12 hours, advantageously less than 6 hours after mixing the acid with TEOS in the presence of water when this mixture is operated and maintained at 20 °C or less, to form after drying said superhydrophobic coating, said fresh acid suspension being such: (a) that it contains a quantity of water such that the water / TEOS molar ratio is between 0.5 and 2.5, advantageously between 0.5 and 2, preferably between 0.5 and 1.5, (b) that it contains a quantity of TEOS such that the weight ratio TEOS / solid particles is between 1 and 10, and (c) that it contains an amount of acid so that the pH of the fresh suspension measured at 20 °C is less than 3, advantageously less than or equal to 1. - solid particles with a particle size of less than 500 μm, advantageously less than 300 μm, said solid particles consisting of more than 80% by weight, advantageously more than 85% by weight, preferably more than 90% by weight of agglomerates of SiO 2 primary nanoparticles, the SiO 2 primary nanoparticles of said agglomerates having a number average particle size of less than 70 nm, advantageously less than 60 nm, preferably less than 50 nm, said SiO 2 particle agglomerates and/or SiO 2 nanoparticles thereof being functionalized with groups selected from the group consisting of dimethyloxy, trimethyloxy and their mixture in order to have a relative residual content of SiOH group between 40% and 60% of the SiOH residual content of pyrogenic silica particle containing about 2 SiOH groups per nm 2, said particles representing from 0.6% to 6% by weight, preferably from 1% to 6% by weight, preferably from 2% to 4% by weight of the suspension; - an alcohol or a mixture of alcohols, said alcohol or said alcohols advantageously comprising 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, - TEOS representing 2 to 20% by weight, in particular of 3 to 15% by weight of the suspension, - an acid, and - water; (a) that it contains a quantity of water such that the water / TEOS molar ratio is between 0.5 and 2.5, advantageously between 0.5 and 2, preferably between 0.5 and 1.5, (b) that it contains a quantity of TEOS such that the weight ratio TEOS / solid particles is between 1 and 10, and (c) that it contains an amount of acid so that the pH of the fresh suspension measured at 20 °C is less than 3, advantageously less than or equal to 1.