RSTLL Mattress Size Guide

Standard U.S. Mattress Sizes

Twin: 38" W x 75" L (96.5 x 190.5 cm) — Children, teenagers, guest rooms, bunk beds

Twin XL: 38" W x 80" L (96.5 x 203 cm) — Tall individuals, college dorms, guest rooms

Full/Double: 54" W x 75" L (137 x 190.5 cm) — Single adults, couples who don't mind sleeping close, guest rooms

Queen: 60" W x 80" L (152.5 x 203 cm) — Couples (most popular size), single sleepers who want extra space

King: 76" W x 80" L (193 x 203 cm) — Couples who want maximum space, families who co-sleep with children

California King: 72" W x 84" L (183 x 213 cm) — Tall individuals (over 6'3"), couples who want extra length

Mattress Thickness Guide

10 Inch Mattress

Profile: Budget-friendly, low-profile design

Best for: Guest rooms, children's rooms, bunk beds, budget-conscious shoppers, lighter individuals (under 150 lbs)

Construction: 2" memory foam comfort layer, 3" high-resilience transition layer, 5" high-density base foam

Feel: Medium-firm

12 Inch Mattress

Profile: Most popular, balanced comfort and support

Best for: All sleep positions (back, side, stomach), average weight individuals (150-230 lbs), couples with different sleep preferences, those seeking the best value

Construction: 3" memory foam comfort layer, 3" high-resilience transition layer, 6" high-density base foam with pocket coils (select models)

Feel: Medium-firm with enhanced pressure relief

14 Inch Mattress

Profile: Premium luxury, maximum cushioning

Best for: Side sleepers, heavier individuals (over 230 lbs), those with back or joint pain, sleepers who prefer a plush feel

Construction: 4" gel-infused memory foam comfort layer, 4" high-resilience transition layer, 6" high-density base foam with individually wrapped coils

Feel: Medium-plush with superior contouring

Room Size Recommendations

Twin: Minimum 7' x 10' | Ideal 10' x 10'

Twin XL: Minimum 7' x 11' | Ideal 10' x 11'

Full: Minimum 9' x 10' | Ideal 10' x 12'

Queen: Minimum 10' x 10' | Ideal 10' x 14'

King: Minimum 12' x 12' | Ideal 14' x 16'

Cal King: Minimum 12' x 12' | Ideal 14' x 16'

Tip: Allow at least 2-3 feet of walking space around the mattress for easy movement.

Weight Capacity by Size

Twin: 250 lbs (single)

Twin XL: 250 lbs (single)

Full: 400 lbs (single) | 250 lbs each (two sleepers)

Queen: 500 lbs (single) | 300 lbs each (two sleepers)

King: 600 lbs (single) | 350 lbs each (two sleepers)

Cal King: 600 lbs (single) | 350 lbs each (two sleepers)

How to Measure Your Space

1. Measure Your Room
Use a tape measure to get accurate room dimensions. Account for door swings, closets, and windows. Leave 2-3 feet of walking space on all sides.

2. Measure Your Bed Frame
Measure inside the frame rails (where the mattress sits). Standard frame sizes may vary slightly. Ensure the frame can support your chosen mattress thickness.

3. Check Doorways and Hallways
Measure door widths (minimum 30" recommended). Check hallway widths for moving. Measure stairwells if applicable.

4. Consider Future Moves
Will this size fit in your next home? Can you easily move it up stairs or around corners?

Sleeper Position Guide

Back Sleeper: 10-12 inch thickness, medium-firm firmness, Queen or King size

Side Sleeper: 12-14 inch thickness, medium-plush firmness, Queen or King size

Stomach Sleeper: 10-12 inch thickness, firm firmness, Full or Queen size

Combination Sleeper: 12 inch thickness, medium firmness, Queen size

Couples: 12-14 inch thickness, medium-firm firmness, King or Cal King size

Bed Frame Compatibility

RSTLL mattresses work with all standard bed frames:

✅ Platform Beds — Solid or slatted surface
✅ Slatted Frames — Slats should be no more than 3 inches apart
✅ Box Springs — Traditional or low-profile
✅ Adjustable Bases — All RSTLL mattresses are compatible
✅ Bunk Beds — Twin and Twin XL sizes
✅ Floor — Can be placed directly on the floor (ensure ventilation)

Sheet Size Reference

Twin: 38" x 75" | 10-14 inch deep pocket

Twin XL: 38" x 80" | 10-14 inch deep pocket

Full: 54" x 75" | 10-14 inch deep pocket

Queen: 60" x 80" | 10-14 inch deep pocket

King: 76" x 80" | 10-14 inch deep pocket

Cal King: 72" x 84" | 10-14 inch deep pocket

Note: Our mattresses range from 10-14 inches thick. We recommend deep pocket sheets (14 inch or more) for the best fit.

Quick Size Selector

Choose Twin if: You're buying for a child, teenager, or guest room with limited space.

Choose Twin XL if: You need extra length for a tall person or furnishing a college dorm.

Choose Full if: You're a single adult who wants more space, or a couple comfortable sleeping close together.

Choose Queen if: You're a couple looking for the most popular, versatile size that fits most bedrooms.

Choose King if: You're a couple who wants maximum sleeping space or often share the bed with children or pets.

Choose California King if: You're taller than 6'3" or want extra length over extra width.

Need Help Choosing?

Not sure which size is right for you? Contact our sleep experts:

Email: support@rstll.com
Phone: +1 (213) 352-5535
Hours: Monday-Friday, 9:00 AM - 6:00 PM PST

We're here to help you find the perfect mattress size for your needs!

RSTLL Mattress Size Guide

Standard U.S. Mattress Sizes

Mattress Thickness Guide

10 Inch Mattress

Profile: Budget-friendly, low-profile design

Best for: Guest rooms, children's rooms, bunk beds, budget-conscious shoppers, lighter individuals (under 150 lbs)

Construction: 2" memory foam comfort layer, 3" high-resilience transition layer, 5" high-density base foam

Feel: Medium-firm

12 Inch Mattress

Profile: Most popular, balanced comfort and support

Best for: All sleep positions (back, side, stomach), average weight individuals (150-230 lbs), couples with different sleep preferences, those seeking the best value

Construction: 3" memory foam comfort layer, 3" high-resilience transition layer, 6" high-density base foam with pocket coils (select models)

Feel: Medium-firm with enhanced pressure relief

14 Inch Mattress

Profile: Premium luxury, maximum cushioning

Best for: Side sleepers, heavier individuals (over 230 lbs), those with back or joint pain, sleepers who prefer a plush feel

Construction: 4" gel-infused memory foam comfort layer, 4" high-resilience transition layer, 6" high-density base foam with individually wrapped coils

Feel: Medium-plush with superior contouring

Room Size Recommendations

Tip: Allow at least 2-3 feet of walking space around the mattress for easy movement.

Weight Capacity by Size

How to Measure Your Space

1. Measure Your Room
Use a tape measure to get accurate room dimensions. Account for door swings, closets, and windows. Leave 2-3 feet of walking space on all sides.

2. Measure Your Bed Frame
Measure inside the frame rails (where the mattress sits). Standard frame sizes may vary slightly. Ensure the frame can support your chosen mattress thickness.

3. Check Doorways and Hallways
Measure door widths (minimum 30" recommended). Check hallway widths for moving. Measure stairwells if applicable.

4. Consider Future Moves
Will this size fit in your next home? Can you easily move it up stairs or around corners?

Sleeper Position Guide

Bed Frame Compatibility

RSTLL mattresses work with all standard bed frames:

✅ Platform Beds — Solid or slatted surface
✅ Slatted Frames — Slats should be no more than 3 inches apart
✅ Box Springs — Traditional or low-profile
✅ Adjustable Bases — All RSTLL mattresses are compatible
✅ Bunk Beds — Twin and Twin XL sizes
✅ Floor — Can be placed directly on the floor (ensure ventilation)

Sheet Size Reference

Note: Our mattresses range from 10-14 inches thick. We recommend deep pocket sheets (14 inch or more) for the best fit.

Quick Size Selector

Choose Twin if: You're buying for a child, teenager, or guest room with limited space.

Choose Twin XL if: You need extra length for a tall person or furnishing a college dorm.

Choose Full if: You're a single adult who wants more space, or a couple comfortable sleeping close together.

Choose Queen if: You're a couple looking for the most popular, versatile size that fits most bedrooms.

Choose King if: You're a couple who wants maximum sleeping space or often share the bed with children or pets.

Choose California King if: You're taller than 6'3" or want extra length over extra width.

Need Help Choosing?

Not sure which size is right for you? Contact our sleep experts:

Email: support@rstll.com
Phone: +1 (213) 352-5535
Hours: Monday-Friday, 9:00 AM - 6:00 PM PST

We're here to help you find the perfect mattress size for your needs!