Melbourne-based bag retailer Crumpler has adopted a strategy of launching three- to nine-month pop-ups to test potential locations before committing to new store sites.   “It’s a great opportunity to test the market, and there are a lot more pop-ups around in the retail market, so landlords are more open to them now,” Adam Wilkinson, Crumpler’s chief executive, told Inside Retail Weekly. “We get a lot of invites to look at sites – there are some great ones available.” Cru