Marking instrument housing

A method of marking a substrate with a marking instrument comprising:

• forming a marking on the substrate with a marking instrument comprising
• a first barrel member,
• a second barrel member coupled to said first barrel member,
• said first and second barrel members together defining a marking instrument body,
• an elastomeric sealing member bonded to said first barrel member, said elastomeric sealing member forming a watertight seal with said second barrel member, an elastomeric gripping member disposed on an exposed surface of said first barrel member to provide a gripping surface constructed to be gripped by a user during use of the writing instrument, said first barrel member comprising a polymeric base that includes a channel in fluid communication between the sealing member and the gripping member,
• said elastomeric gripping member being separate from said elastomeric sealing member, said sealing member and said gripping member being made integral by a connecting elastomeric member in said channel, and
• a marking medium disposed within said instrument,
• said instrument having an opening for allowing said marking medium to exit said instrument, while gripping the gripping surface of the marking instrument.