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We consider the point indentation of a pressurized, spherical elastic shell.Previously it was shown that such shells wrinkle once the indentation reaches athreshold value. Here, we study the behaviour of this system beyond the onsetof instability. We show that rather than simply approaching the classical`mirror-buckled' shape, the wrinkled shell approaches a new, universal shapethat reflects a nontrivial type of isometry. For a given indentation depth,this ``asymptotic isometry", which is only made possible by wrinkling, isreached in the doubly asymptotic limit of weak pressure and vanishing shellthickness.

Wrinkling reveals a new isometry of pressurized elastic shells