The BIRKENSTOCK Atacama is a variation on the classic Arizona and is the perfect sandal for anyone who is on their feet all day. The pin buckles have been replaced by hook-and-loop fasteners and the heel of the sole has been reinforced. Perfect for all active and adventurous BIRKENSTOCK fans. The polyurethane sole is affixed to the footbed in two layers and therefore offers maximum flexibility, grip and durability. The upper is made from the skin-friendly, hard-wearing synthetic material Birko-Flor which was reinterpreted with a futuristic look. Anatomically shaped cork-latex footbed Upper: Birko-Flor Futura Footbed lining: polyurethane (PU) Sole: light polyurethane sole (PU) Details: two straps, each with an individually adjustable hook-and-loop fastener Made in Germany WOMENS EU UK/US Width Length Width 35 UK 2.5US 4-4.5 Narrow 221-225 81-84 Regular 221-225 85-89 36 UK 3.5US 5-5.5 Narrow 226-230 83-86 Regular 226-230 87-91 37 UK 4.5US 6-6.5 Narrow 231-240 84-89 Regular 231-240 90-98 38 UK 5US 7-7.5 Narrow 241-245 86-91 Regular 241-245 92-100 39 UK 5.5US 8-8.5 Narrow 246-250 88-93 Regular 246-250 94-102 40 UK 7US 9-9.5 Narrow 251-260 90-95 Regular 251-260 96-104 41 UK 7.5US 10-10.5 Narrow 261-265 91-96 Regular 261-265 97-105 42 UK 8US 11-11.5 Narrow 266-270 93-97 Regular 266-270 98-107 43 UK 9US 12-12.5 Narrow 271-280 95-100 Regular 271-280 101-109 MENS EU UK/US Width Length Width 39 UK 5.5US 6-6.5 Narrow 246-250 88-93 Regular 246-250 94-102 40 UK 7US 7-7.5 Narrow 251-260 90-95 Regular 251-260 96-104 41 UK 7.5US 8-8.5 Narrow 261-265 91-96 Regular 261-265 97-105 42 UK 8US 9-9.5 Narrow 266-270 93-97 Regular 266-270 98-107 43 UK 9US 10-10.5 Narrow 271-280 95-100 Regular 271-280 101-109 44 UK 9.5US 11-11.5 Narrow 281-285 97-102 Regular 281-285 103-111 45 UK 10.5US 12-12.5 Narrow 286-290 99-104 Regular 286-290 105-113 46 UK 11US 13-13.5 Narrow 291-300 101-106 Regular 291-300 107-115