Carvela by Kurt Geiger's Snail boots successfully balance hard wearing practicality with streetwear credentials. Reaching high on the ankle the pair feature both zip fastening and lace up detailing, complete with a flat heel. The brogue’s decorative perforations make for a gentlemanly style to an otherwise tough exterior, cut from hand burnished leather. Tread into autumn with a grunge attitude and style them with pleated skirts sitting mid calf or worn over a slim lined suit to show them whose boss.Carvela Snail leather ankle bootsZip fastening at sideRound toe, lace up detailing at front, broque perforations, contrasting sole, flat heel, contrasting sole Leather upper, synthetic lining, synthetic sole
Ankle Carvela Snail Boots Tan Leather qS60wTfvxR


A convenient and inherently more secure communication channel for encoding messages via specifically designed molecular keys is introduced by combining advanced encryption standard cryptography with molecular steganography. The necessary molecular keys require large structural diversity, thus suggesting the application of multicomponent reactions. Herein, the Ugi four-component reaction of perfluorinated acids is utilized to establish an exemplary database consisting of 130 commercially available components. Considering all permutations, this combinatorial approach can unambiguously provide 500,000 molecular keys in only one synthetic procedure per key. The molecular keys are transferred nondigitally and concealed by either adsorption onto paper, coffee, tea or sugar as well as by dissolution in a perfume or in blood. Re-isolation and purification from these disguises is simplified by the perfluorinated sidechains of the molecular keys. High resolution tandem mass spectrometry can unequivocally determine the molecular structure and thus the identity of the key for a subsequent decryption of an encoded message.




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