A widely spaced gap between the first toe (the great toe) and the second toe. The phenotype is Sandal gap (Human Phenotype Ontology identifier HP_0001852). Also known as: Gap between 1st and 2nd toes, Gap between first and second toe, Increased space between first and second toes, Sandal gap between first and second toes, Space between great toe and second toe, Wide space between 1st, 2nd toes, Wide space between first and second toes, Wide-spaced big toe.