A hand cover comprising a sheet member with a hole and a tubular section extending from the hole. The pacifier glove includes a mitten body having opposing sides and having a closed end and an open end, the opposing sides of the mitten body defining an opening there between, the opening being accessible via the open end. A first group of tipping blades is mounted circumferentially inside the cylinder between the insertion section and the second heat exchange zone. A removable seal is then placed in the opening in order to prevent undesired leakages, while maintaining the benefit of the increased platform flexibility. However, because the optimized solution from the optimization method does not converge with the actual solution if the limit values are chosen erroneously, an error handling process for identification and correction of incorrect limit values is carried out.