Öresund Golf club used different winter mats every winter in order to keep their summer tees open. Today 11/3 after 5 months service all mats on par 4 and par 5 tees were removed. See pictures below.
You can use your summer tee during the entire winter season without destroying the tee surface for next season.
Select a spot on tee where you install the mat. Pins are included of course. When spring arrives you remove the mat, wash it store and use it for next season again.

Winter tee mats

Name CL 2802 CL 1201   
Measurement +- 20 mm 2,4 m x 1,8 m 2,4 m x 1,8 m
Height +- 5 mm 28 mm 12 mm
Sole No No
Rubber tee 2 pcs 2 pcs
Weight +- 50 g 3 kg 2 kg

NRT 2500 is a firm knitted very strong mat for distances up to 140 m.
CL 2802 has longer piles 28 mm and can be used without tees.
CL 1201 is developed to integrate with natural turf on tee all distances but can also be used during winter time. 

Prices exkluding VAT and freight.