FASTSUB Sublimation Tumblers 20 oz Blank Bulk Cups Straight Skinny

In this review the FASTSUB Sublimation Tumblers 20 oz blank bulk cups are assessed for crafters who need a reliable canvas for custom tumblers; the single biggest reason to buy is the fully white, mirror-like coating that takes sublimation transfers cleanly and consistently. These tumblers target small business owners, craft fair vendors and hobbyists who want a straight skinny shape that reduces image distortion and a durable double-wall stainless steel build that keeps drinks hot or cold for hours.

Key Features

• Full white coating: A continuous white finish creates a flat, mirror-like canvas that simplifies heat transfer and helps colors appear bright and even after sublimation.
• Straight skinny design: The 20 oz straight skinny body and flat bottom edge minimize image distortion during transfer and make alignment easier for wraps and full-body prints.
• Food-grade stainless steel: Constructed from 18/8 304 stainless steel, these cups provide a solid, corrosion-resistant interior suitable for everyday beverage use.
• Double-wall vacuum insulation: The insulated structure helps beverages stay hot or cold for several hours, making the tumblers practical for daily use or gifting.
• Complete kit per cup: Each tumbler arrives with a lid, stainless steel straw, straw brush, silicone coaster and ribbon, reducing the need to source small accessories separately.
• Individual and protective packaging: Each cup is boxed individually and the 12 pack is shipped in two large outer boxes to reduce the risk of damage in transit.

Who It's For

These tumblers are aimed at crafters and small businesses focused on personalized drinkware who need a reliable blank that sublimates well; the white coating and straight profile are particularly helpful for full-wrap designs and photo transfers. The included lid, straw and finishing ribbon make them a convenient choice for sellers preparing ready-to-gift items.

They are less suitable for people who want printed tumblers pre-decorated or for projects that require tapered shapes; if you need a tapered or specialty profile, look for blanks made specifically with that contour since this straight skinny style is optimized for even transfer and minimal distortion.

Pros & Cons

Pros

• Excellent sublimation surface thanks to the bright, silky white coating that yields vivid results for many designs.
• Sturdy 18/8 304 stainless steel and double-wall vacuum construction provide thermal performance and durability.
• Practical straight skinny shape with a flat bottom that helps prevent image warping during transfer.
• Well thought-out packaging with individual boxes and included accessories for immediate gifting or resale.

Cons

• Some buyers report mixed image quality depending on transfer technique, so achieving perfect results may require calibration or practice.
• Limited to a straight skinny profile, so it is not ideal for projects that require tapered or unusual shapes.

Specifications

Capacity	20 oz
Pack Quantity	12 pack
Material	18/8 304 food-grade stainless steel
Coating	Full white sublimation coating (mirror-like, silky touch)
Structure	Double-wall vacuum insulated
Accessories per cup	1 lid, 1 stainless straw, 1 straw brush, 1 silicone coaster, 1 ribbon
Packaging	Individual boxes, protected by 2 large outer boxes

Our Verdict

The FASTSUB 20 oz sublimation tumblers are a solid choice for crafters and small sellers who need a dependable blank that sublimates reliably and ships ready to gift. With a true white coating, straight skinny form and robust stainless build, they offer good value for projects focused on photo-quality transfers and consistent finishes.

Frequently Asked Questions

Do these tumblers keep drinks hot or cold?
Yes, the double-wall vacuum construction helps beverages remain hot or cold for several hours.

Are lids and straws included?
Each tumbler in the 12 pack includes a lid, a stainless steel straw, a straw brush, a silicone coaster and a ribbon.

Will the sublimation image distort on these cups?
The straight skinny body and flat bottom edge are designed to minimize distortion, though image quality can vary with transfer technique and settings.