1. XL Plush Fleece Outdoor Stadium Waterproof Blanket (Click Link to Check Price on Amazon)
Editor's Rating : 9.3 out of 10
72" x 58" A perfect size for two adultsWaterproof outer shell and soft fleece interior will keep you comfy, warm and dry

2. JJ Cole Outdoor Blanket,Gray/Green, 5' x 5' (Click Link to Check Price on Amazon)
Editor's Rating : 9.4 out of 10
5 ft x 5 ft when openedWater-resistant material perfect for any outing

3. Yodo Soft Compact Outdoor Water-Resistant Picnic Blanket Tote,Beige Stripe (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
Blanket measures 59 x 53 inches when open, and folds to a compact tote 12.5 x 8 x 4 inches for easy carryWater-proof backing prevents ground moisture from penetrating - no more 'wet bottom' picnics

4. Premium Extra Large Picnic & Outdoor Blanket with Improved Backing, Carrying Buckle, & Machine Washable (Navy Blue) (Click Link to Check Price on Amazon)
Editor's Rating : 9.8 out of 10
✔ PREMIUM & EXTRA DURABLE - Compared to standard blankets, this version is made with premium polar fleece, improved backing, and is machine washable✔ EASY TO CARRY & EASY STORAGE - Easily rolls up and includes convenient carrying buckle/strap - so simply grab it when you need it. Unfolded measures 58 x 80 inches

5. Montem Premium Pocket Blanket / Compact Picnic, Beach, Outdoor, Camping Blanket Made From Premium Soft and Lightweight Waterproof Material Ideal for Camping / Traveling / Hiking (Click Link to Check Price on Amazon)
Editor's Rating : 8.9 out of 10
HOLIDAY SALE. Over 50% OFF! Ultra-compact pocket blanket folds out to a large 55" x 60" blanket when open and folds down to about the size of your smart phone. Plenty of room for 2 - 3 people to relax.Waterproof and puncture resistant. Water repellent to keep you clean and dry. Puncture resistant to keep you comfortable. Protects you from twigs, rocks, dirt, sand and insects.