Moomin Summer collection – enamel mug 3,7 dl The Moomin Summer collection is based on Tove Jansson’s beloved book Moominsummer Madness (1954). The collection is made exclusively for the Moomin Shops. Muurla’s enamel mugs have a fully rounded rim for more comfortable using. All Muurla’s enamelware carries a carbon steel core, with a double coating …