Opinion of Advocate General Saugmandsgaard Øe delivered on 19 December 2018.#slewo - schlafen leben wohnen GmbH v Sascha Ledowski.#Request for a preliminary ruling from the Bundesgerichtshof.#Reference for a preliminary ruling — Consumer protection — Directive 2011/83/EU — Article 6(1)(k) and Article 16(e) — Distance contract — Right of withdrawal — Exceptions — Concept of ‘sealed goods which are not suitable for return due to health protection or hygiene reasons and which have been unsealed by the consumer after delivery’ — Mattress whose protective seal has been removed by the consumer after delivery.#Case C-681/17.